Since Apparently you and the other griping posters can obviously read, you should notice that, yes, while the thread was started about fuel mileage, the OP has directed the conversation elsewhere. And since the OP has no such problem with this, as you and some others do, you're more than welcome to quit cluttering this discussion with your complaints and start a new thread, there's nothing stopping you, I promise.

 

"Why can't we all just get along" The OP is still licking his wounds from the beatdown he took on the axle vs tranny gearing. But, before I give up entirely I'm going for a second opinion from my son the engineer. problem is he builds bridges and highways so he'll probably have to go back to school to give me another beatdown. More later when I hear from him or see the 2011 tow ratings.

 

From an old (electrical) engineer. Comments above like the bicycle example are right on. Here's the numbers - I guessed on the tire diameter, somebody can check my math and let me know if the mi/hr numbers seem to match what happens in the real world. I don't have my truck to play with yet!


If somebody has the gearing for the 2010 5 speed we can compare it to the new one but I think we'll find that the wider spread of the new tranny gearing more than makes up for the lower rear end - more of the Scorpion's torque transferred to the wheels in 1st AND lower RPMs in 6th.
<TABLE style="WIDTH: 197pt; BORDER-COLLAPSE: collapse" border=0 cellSpacing=0 cellPadding=0 width=261 x:str><COLGROUP><COL style="WIDTH: 67pt; mso-width-source: userset; mso-width-alt: 3254" width=89><COL style="WIDTH: 48pt" width=64><COL style="WIDTH: 41pt; mso-width-source: userset; mso-width-alt: 1974" span=2 width=54><TBODY><TR style="HEIGHT: 13.5pt" height=18><TD style="BORDER-BOTTOM: black 1pt solid; BORDER-LEFT: windowtext 1pt solid; BACKGROUND-COLOR: transparent; WIDTH: 115pt; HEIGHT: 27pt; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: black 1pt solid" class=xl40 height=36 rowSpan=2 width=153 colSpan=2>Gear Ratios</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; WIDTH: 82pt; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: black 1pt solid" class=xl38 width=108 colSpan=2>Final Drive</TD></TR><TR style="HEIGHT: 13.5pt" height=18><TD style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: #ccffcc; HEIGHT: 13.5pt; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl32 height=18 x:num>3.31</TD><TD style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: #ccffcc; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 1pt solid" class=xl33 x:num>3.55</TD></TR><TR style="HEIGHT: 12.75pt" height=17><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext 1pt solid; BACKGROUND-COLOR: transparent; HEIGHT: 12.75pt; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl34 height=17>1st</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: #ccffcc; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 1pt solid" class=xl35 align=right x:num>3.97</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl28 align=right x:num="13.140700000000001" x:fmla="=$B3*C$2">13.14</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 1pt solid" class=xl29 align=right x:num="14.093500000000001" x:fmla="=$B3*D$2">14.09</TD></TR><TR style="HEIGHT: 12.75pt" height=17><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext 1pt solid; BACKGROUND-COLOR: transparent; HEIGHT: 12.75pt; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl24 height=17>2nd</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: #ccffcc; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 1pt solid" class=xl36 align=right x:num>2.32</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl30 align=right x:num="7.6791999999999998" x:fmla="=$B4*C$2">7.68</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 1pt solid" class=xl25 align=right x:num="8.2359999999999989" x:fmla="=$B4*D$2">8.24</TD></TR><TR style="HEIGHT: 13.5pt" height=18><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext 1pt solid; BACKGROUND-COLOR: transparent; HEIGHT: 13.5pt; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl24 height=18>3rd</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: #ccffcc; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 1pt solid" class=xl36 align=right x:num>1.52</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl30 align=right x:num="5.0312000000000001" x:fmla="=$B5*C$2">5.03</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 1pt solid" class=xl25 align=right x:num="5.3959999999999999" x:fmla="=$B5*D$2">5.40</TD></TR><TR style="HEIGHT: 12.75pt" height=17><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext 1pt solid; BACKGROUND-COLOR: transparent; HEIGHT: 12.75pt; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl24 height=17>4th</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: #ccffcc; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 1pt solid" class=xl36 align=right x:num>1.15</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl30 align=right x:num="3.8064999999999998" x:fmla="=$B6*C$2">3.81</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 1pt solid" class=xl25 align=right x:num="4.0824999999999996" x:fmla="=$B6*D$2">4.08</TD></TR><TR style="HEIGHT: 12.75pt" height=17><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext 1pt solid; BACKGROUND-COLOR: transparent; HEIGHT: 12.75pt; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl24 height=17>5th</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: #ccffcc; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 1pt solid" class=xl36 align=right x:num>0.86</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl30 align=right x:num="2.8466" x:fmla="=$B7*C$2">2.85</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 1pt solid" class=xl25 align=right x:num="3.0529999999999999" x:fmla="=$B7*D$2">3.05</TD></TR><TR style="HEIGHT: 13.5pt" height=18><TD style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext 1pt solid; BACKGROUND-COLOR: transparent; HEIGHT: 13.5pt; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl26 height=18>6th</TD><TD style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: #ccffcc; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 1pt solid" class=xl37 align=right x:num>0.67</TD><TD style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl31 align=right x:num="2.2177000000000002" x:fmla="=$B8*C$2">2.22</TD><TD style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 1pt solid" class=xl27 align=right x:num="2.3784999999999998" x:fmla="=$B8*D$2">2.38</TD></TR></TBODY></TABLE>

<TABLE style="WIDTH: 154pt; BORDER-COLLAPSE: collapse" border=0 cellSpacing=0 cellPadding=0 width=204 x:str><COLGROUP><COL style="WIDTH: 72pt; mso-width-source: userset; mso-width-alt: 3510" width=96><COL style="WIDTH: 41pt; mso-width-source: userset; mso-width-alt: 1974" span=2 width=54><TBODY><TR style="HEIGHT: 13.5pt" height=18><TD style="BORDER-BOTTOM: #f0f0f0; BORDER-LEFT: windowtext 1pt solid; BACKGROUND-COLOR: transparent; WIDTH: 154pt; HEIGHT: 13.5pt; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: black 1pt solid" class=xl32 height=18 width=204 colSpan=3>Tire</TD></TR><TR style="HEIGHT: 12.75pt" height=17><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext 1pt solid; BACKGROUND-COLOR: transparent; HEIGHT: 12.75pt; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: windowtext 0.5pt solid" class=xl24 height=17>Diameter</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: yellow; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: windowtext 0.5pt solid" class=xl35 align=right x:num>29.00</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: windowtext 1pt solid" class=xl25>inches</TD></TR><TR style="HEIGHT: 12.75pt" height=17><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext 1pt solid; BACKGROUND-COLOR: transparent; HEIGHT: 12.75pt; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl26 height=17>Circumference</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl29 align=right x:num="91.106186954104004" x:fmla="=PI()*B2">91.11</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 1pt solid" class=xl30>inches</TD></TR><TR style="HEIGHT: 13.5pt" height=18><TD style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext 1pt solid; BACKGROUND-COLOR: transparent; HEIGHT: 13.5pt; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl27 height=18>Miles/Rotation</TD><TD style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl28 align=right x:num="1.4379133041998737E-3" x:fmla="=B3/12/5280">0.00144</TD><TD style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 1pt solid" class=xl31>Miles</TD></TR></TBODY></TABLE>

Continued . . .

 

. . . continued

<TABLE style="WIDTH: 361pt; BORDER-COLLAPSE: collapse" border=0 cellSpacing=0 cellPadding=0 width=477 x:str><COLGROUP><COL style="WIDTH: 67pt; mso-width-source: userset; mso-width-alt: 3254" width=89><COL style="WIDTH: 48pt" width=64><COL style="WIDTH: 41pt; mso-width-source: userset; mso-width-alt: 1974" span=6 width=54><TBODY><TR style="HEIGHT: 12.75pt" height=17><TD style="BORDER-BOTTOM: black 1pt solid; BORDER-LEFT: windowtext 1pt solid; BACKGROUND-COLOR: transparent; WIDTH: 115pt; HEIGHT: 26.25pt; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: black 1pt solid" class=xl39 height=35 rowSpan=2 width=153 colSpan=2>Mi/Hr</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: #f0f0f0; BACKGROUND-COLOR: transparent; WIDTH: 41pt; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: windowtext 0.5pt solid" class=xl45 width=54>Gear</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: #ccffcc; WIDTH: 41pt; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: windowtext 0.5pt solid" class=xl32 width=54 align=right x:num>3.31</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; WIDTH: 41pt; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: windowtext 0.5pt solid" class=xl25 width=54></TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; WIDTH: 41pt; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: windowtext 0.5pt solid" class=xl25 width=54></TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; WIDTH: 41pt; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: windowtext 0.5pt solid" class=xl25 width=54></TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; WIDTH: 41pt; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: windowtext 1pt solid" class=xl26 width=54></TD></TR><TR style="HEIGHT: 13.5pt" height=18><TD style="BORDER-BOTTOM: #f0f0f0; BORDER-LEFT: #f0f0f0; BACKGROUND-COLOR: transparent; HEIGHT: 13.5pt; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl46 height=18>1st</TD><TD style="BORDER-BOTTOM: #f0f0f0; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl40>2nd</TD><TD style="BORDER-BOTTOM: #f0f0f0; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl40>3rd</TD><TD style="BORDER-BOTTOM: #f0f0f0; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl40>4th</TD><TD style="BORDER-BOTTOM: #f0f0f0; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl40>5th</TD><TD style="BORDER-BOTTOM: #f0f0f0; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 1pt solid" class=xl41>6th</TD></TR><TR style="HEIGHT: 12.75pt" height=17><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext 1pt solid; BACKGROUND-COLOR: transparent; HEIGHT: 12.75pt; BORDER-TOP: #f0f0f0; BORDER-RIGHT: windowtext 0.5pt solid" class=xl37 height=17>RPM</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: #ccffcc; BORDER-TOP: #f0f0f0; BORDER-RIGHT: #f0f0f0" class=xl38 align=right x:num>600</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext 1pt solid; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: windowtext 0.5pt solid" class=xl42 align=right x:num="3.9392786496301913">3.9</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: windowtext 0.5pt solid" class=xl43 align=right x:num="6.740920792686147">6.7</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: windowtext 0.5pt solid" class=xl43 align=right x:num="10.288773841468329">10.3</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: windowtext 0.5pt solid" class=xl43 align=right x:num="13.599074990462487">13.6</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: windowtext 0.5pt solid" class=xl43 align=right x:num="18.184809580269604">18.2</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: windowtext 1pt solid" class=xl44 align=right x:num="23.341695879152027">23.3</TD></TR><TR style="HEIGHT: 12.75pt" height=17><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext 1pt solid; BACKGROUND-COLOR: transparent; HEIGHT: 12.75pt; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl27 height=17></TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: #ccffcc; BORDER-TOP: windowtext; BORDER-RIGHT: #f0f0f0" class=xl33 align=right x:num>1000</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext 1pt solid; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl35 align=right x:num="6.5654644160503182">6.6</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl24 align=right x:num="11.234867987810244">11.2</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl24 align=right x:num="17.147956402447214">17.1</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl24 align=right x:num="22.665124984104146">22.7</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl24 align=right x:num="30.308015967116006">30.3</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 1pt solid" class=xl28 align=right x:num="38.902826465253376">38.9</TD></TR><TR style="HEIGHT: 12.75pt" height=17><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext 1pt solid; BACKGROUND-COLOR: transparent; HEIGHT: 12.75pt; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl27 height=17></TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: #ccffcc; BORDER-TOP: windowtext; BORDER-RIGHT: #f0f0f0" class=xl33 align=right x:num>1500</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext 1pt solid; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl35 align=right x:num="9.8481966240754772">9.8</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl24 align=right x:num="16.852301981715367">16.9</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl24 align=right x:num="25.721934603670821">25.7</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl24 align=right x:num="33.997687476156216">34.0</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl24 align=right x:num="45.462023950674009">45.5</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 1pt solid" class=xl28 align=right x:num="58.354239697880068">58.4</TD></TR><TR style="HEIGHT: 12.75pt" height=17><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext 1pt solid; BACKGROUND-COLOR: transparent; HEIGHT: 12.75pt; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl27 height=17></TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: #ccffcc; BORDER-TOP: windowtext; BORDER-RIGHT: #f0f0f0" class=xl33 align=right x:num>2000</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext 1pt solid; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl35 align=right x:num="13.130928832100636">13.1</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl24 align=right x:num="22.469735975620488">22.5</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl24 align=right x:num="34.295912804894428">34.3</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl24 align=right x:num="45.330249968208292">45.3</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl24 align=right x:num="60.616031934232012">60.6</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 1pt solid" class=xl28 align=right x:num="77.805652930506753">77.8</TD></TR><TR style="HEIGHT: 13.5pt" height=18><TD style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext 1pt solid; BACKGROUND-COLOR: transparent; HEIGHT: 13.5pt; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl29 height=18></TD><TD style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: #ccffcc; BORDER-TOP: windowtext; BORDER-RIGHT: #f0f0f0" class=xl34 align=right x:num>2500</TD><TD style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext 1pt solid; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl36 align=right x:num="16.413661040125795">16.4</TD><TD style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl30 align=right x:num="28.087169969525611">28.1</TD><TD style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl30 align=right x:num="42.869891006118031">42.9</TD><TD style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl30 align=right x:num="56.662812460260362">56.7</TD><TD style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl30 align=right x:num="75.770039917790015">75.8</TD><TD style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 1pt solid" class=xl31 align=right x:num="97.257066163133445">97.3</TD></TR></TBODY></TABLE>


<TABLE style="WIDTH: 328pt; BORDER-COLLAPSE: collapse" border=0 cellSpacing=0 cellPadding=0 width=432 x:str><COLGROUP><COL style="WIDTH: 41pt; mso-width-source: userset; mso-width-alt: 1974" span=8 width=54><TBODY><TR style="HEIGHT: 12.75pt" height=17><TD style="BORDER-BOTTOM: black 1pt solid; BORDER-LEFT: windowtext 1pt solid; BACKGROUND-COLOR: transparent; WIDTH: 82pt; HEIGHT: 26.25pt; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: black 1pt solid" class=xl38 height=35 rowSpan=2 width=108 colSpan=2>Mi/Hr</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: #f0f0f0; BACKGROUND-COLOR: transparent; WIDTH: 41pt; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: windowtext 0.5pt solid" class=xl44 width=54>Gear</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: #ccffcc; WIDTH: 41pt; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: windowtext 0.5pt solid" class=xl32 width=54 align=right x:num>3.55</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; WIDTH: 41pt; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: windowtext 0.5pt solid" class=xl25 width=54></TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; WIDTH: 41pt; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: windowtext 0.5pt solid" class=xl25 width=54></TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; WIDTH: 41pt; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: windowtext 0.5pt solid" class=xl25 width=54></TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; WIDTH: 41pt; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: windowtext 1pt solid" class=xl26 width=54></TD></TR><TR style="HEIGHT: 13.5pt" height=18><TD style="BORDER-BOTTOM: #f0f0f0; BORDER-LEFT: #f0f0f0; BACKGROUND-COLOR: transparent; HEIGHT: 13.5pt; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl45 height=18>1st</TD><TD style="BORDER-BOTTOM: #f0f0f0; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl39>2nd</TD><TD style="BORDER-BOTTOM: #f0f0f0; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl39>3rd</TD><TD style="BORDER-BOTTOM: #f0f0f0; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl39>4th</TD><TD style="BORDER-BOTTOM: #f0f0f0; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl39>5th</TD><TD style="BORDER-BOTTOM: #f0f0f0; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 1pt solid" class=xl40>6th</TD></TR><TR style="HEIGHT: 12.75pt" height=17><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext 1pt solid; BACKGROUND-COLOR: transparent; HEIGHT: 12.75pt; BORDER-TOP: #f0f0f0; BORDER-RIGHT: windowtext 0.5pt solid" class=xl46 height=17>RPM</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: #ccffcc; BORDER-TOP: #f0f0f0; BORDER-RIGHT: #f0f0f0" class=xl37 align=right x:num>600</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext 1pt solid; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: windowtext 0.5pt solid" class=xl41 align=right x:num="3.6729612197960373">3.7</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: windowtext 0.5pt solid" class=xl42 align=right x:num="6.2851965700820136">6.3</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: windowtext 0.5pt solid" class=xl42 align=right x:num="9.5931947648620195">9.6</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: windowtext 0.5pt solid" class=xl42 align=right x:num="12.679700906600235">12.7</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: windowtext 0.5pt solid" class=xl42 align=right x:num="16.955414003011942">17.0</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: windowtext 1pt solid" class=xl43 align=right x:num="21.763665735209358">21.8</TD></TR><TR style="HEIGHT: 12.75pt" height=17><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext 1pt solid; BACKGROUND-COLOR: transparent; HEIGHT: 12.75pt; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl27 height=17></TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: #ccffcc; BORDER-TOP: windowtext; BORDER-RIGHT: #f0f0f0" class=xl33 align=right x:num>1000</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext 1pt solid; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl35 align=right x:num="6.1216020329933958">6.1</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl24 align=right x:num="10.475327616803355">10.5</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl24 align=right x:num="15.988657941436697">16.0</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl24 align=right x:num="21.132834844333725">21.1</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl24 align=right x:num="28.259023338353234">28.3</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 1pt solid" class=xl28 align=right x:num="36.272776225348927">36.3</TD></TR><TR style="HEIGHT: 12.75pt" height=17><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext 1pt solid; BACKGROUND-COLOR: transparent; HEIGHT: 12.75pt; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl27 height=17></TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: #ccffcc; BORDER-TOP: windowtext; BORDER-RIGHT: #f0f0f0" class=xl33 align=right x:num>1500</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext 1pt solid; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl35 align=right x:num="9.1824030494900928">9.2</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl24 align=right x:num="15.712991425205033">15.7</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl24 align=right x:num="23.982986912155049">24.0</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl24 align=right x:num="31.699252266500586">31.7</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl24 align=right x:num="42.388535007529853">42.4</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 1pt solid" class=xl28 align=right x:num="54.409164338023395">54.4</TD></TR><TR style="HEIGHT: 12.75pt" height=17><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext 1pt solid; BACKGROUND-COLOR: transparent; HEIGHT: 12.75pt; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl27 height=17></TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: #ccffcc; BORDER-TOP: windowtext; BORDER-RIGHT: #f0f0f0" class=xl33 align=right x:num>2000</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext 1pt solid; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl35 align=right x:num="12.243204065986792">12.2</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl24 align=right x:num="20.95065523360671">21.0</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl24 align=right x:num="31.977315882873395">32.0</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl24 align=right x:num="42.265669688667451">42.3</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl24 align=right x:num="56.518046676706469">56.5</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 1pt solid" class=xl28 align=right x:num="72.545552450697855">72.5</TD></TR><TR style="HEIGHT: 13.5pt" height=18><TD style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext 1pt solid; BACKGROUND-COLOR: transparent; HEIGHT: 13.5pt; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl29 height=18></TD><TD style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: #ccffcc; BORDER-TOP: windowtext; BORDER-RIGHT: #f0f0f0" class=xl34 align=right x:num>2500</TD><TD style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext 1pt solid; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl36 align=right x:num="15.304005082483489">15.3</TD><TD style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl30 align=right x:num="26.188319042008388">26.2</TD><TD style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl30 align=right x:num="39.971644853591748">40.0</TD><TD style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl30 align=right x:num="52.832087110834308">52.8</TD><TD style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl30 align=right x:num="70.647558345883084">70.6</TD><TD style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 1pt solid" class=xl31 align=right x:num="90.681940563372322">90.7</TD></TR></TBODY></TABLE>

2011 F250SD 6.7 CC/LB Lariate Ultimate on order - I went with the 3.31.

 

Great work Kluger!!! I also went with the 3.31 based solely on my experience with my old 6.9D C6 trans no lockup torque converter. 4.10 axle 68 MPH against the governor. It could tow anything up to 40 MPH, but couldn't get out of its own way running empty. I came to the conclusion way back then that higher gears and better trans would workout better. I think 3.31 and double overdrive will be a very positive improvement. My theory is to gear it for speed and use the transmission for your power. Can't wait for June 7.....

 

I posted the 5speed tranny gears earlier in this topic..

Stanleys confusion is on power, not rpm. He gets that the rpm is lower, but wants to know the loss of pull power due to these changes..

Sam

 

Here's the 2010 numbers. So if the 2010 & 2011 engines had the same torque, the 2011 (3.31) would out-pull the 2010 (4.10) in first and out-run the 2010 (3.73) in top gear. Add the extra torque and the 2011 ought to be sweet! If I'm doing this right. Still assuming 29" diameter tires.

<TABLE style="WIDTH: 197pt; BORDER-COLLAPSE: collapse" border=0 cellSpacing=0 cellPadding=0 width=261 x:str><COLGROUP><COL style="WIDTH: 67pt; mso-width-source: userset; mso-width-alt: 3254" width=89><COL style="WIDTH: 48pt" width=64><COL style="WIDTH: 41pt; mso-width-source: userset; mso-width-alt: 1974" span=2 width=54><TBODY><TR style="HEIGHT: 13.5pt" height=18><TD style="BORDER-BOTTOM: black 1pt solid; BORDER-LEFT: windowtext 1pt solid; BACKGROUND-COLOR: transparent; WIDTH: 115pt; HEIGHT: 27pt; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: black 1pt solid" class=xl40 height=36 rowSpan=2 width=153 colSpan=2>Gear Ratios</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; WIDTH: 82pt; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: black 1pt solid" class=xl38 width=108 colSpan=2>Final Drive</TD></TR><TR style="HEIGHT: 13.5pt" height=18><TD style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: #ccffcc; HEIGHT: 13.5pt; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl32 height=18 x:num>3.73</TD><TD style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: #ccffcc; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 1pt solid" class=xl33 x:num>4.1</TD></TR><TR style="HEIGHT: 12.75pt" height=17><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext 1pt solid; BACKGROUND-COLOR: transparent; HEIGHT: 12.75pt; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl34 height=17>1st</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: #ccffcc; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 1pt solid" class=xl35 align=right x:num>3.11</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl28 align=right x:num="11.600299999999999" x:fmla="=$B3*C$2">11.60</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 1pt solid" class=xl29 align=right x:num="12.750999999999998" x:fmla="=$B3*D$2">12.75</TD></TR><TR style="HEIGHT: 12.75pt" height=17><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext 1pt solid; BACKGROUND-COLOR: transparent; HEIGHT: 12.75pt; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl24 height=17>2nd</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: #ccffcc; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 1pt solid" class=xl36 align=right x:num>2.22</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl30 align=right x:num="8.2806000000000015" x:fmla="=$B4*C$2">8.28</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 1pt solid" class=xl25 align=right x:num="9.1020000000000003" x:fmla="=$B4*D$2">9.10</TD></TR><TR style="HEIGHT: 13.5pt" height=18><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext 1pt solid; BACKGROUND-COLOR: transparent; HEIGHT: 13.5pt; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl24 height=18>3rd</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: #ccffcc; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 1pt solid" class=xl36 align=right x:num>1.22</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl30 align=right x:num="4.5506000000000002" x:fmla="=$B5*C$2">4.55</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 1pt solid" class=xl25 align=right x:num="5.0019999999999998" x:fmla="=$B5*D$2">5.00</TD></TR><TR style="HEIGHT: 12.75pt" height=17><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext 1pt solid; BACKGROUND-COLOR: transparent; HEIGHT: 12.75pt; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl24 height=17>4th</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: #ccffcc; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 1pt solid" class=xl36 align=right x:num>1</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl30 align=right x:num x:fmla="=$B6*C$2">3.73</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 1pt solid" class=xl25 align=right x:num x:fmla="=$B6*D$2">4.10</TD></TR><TR style="HEIGHT: 13.5pt" height=18><TD style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext 1pt solid; BACKGROUND-COLOR: transparent; HEIGHT: 13.5pt; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl26 height=18>5th</TD><TD style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: #ccffcc; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 1pt solid" class=xl37 align=right x:num>0.71</TD><TD style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl31 align=right x:num="2.6482999999999999" x:fmla="=$B7*C$2">2.65</TD><TD style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 1pt solid" class=xl27 align=right x:num="2.9109999999999996" x:fmla="=$B7*D$2">2.91</TD></TR></TBODY></TABLE>

<TABLE style="WIDTH: 320pt; BORDER-COLLAPSE: collapse" border=0 cellSpacing=0 cellPadding=0 width=423 x:str><COLGROUP><COL style="WIDTH: 67pt; mso-width-source: userset; mso-width-alt: 3254" width=89><COL style="WIDTH: 48pt" width=64><COL style="WIDTH: 41pt; mso-width-source: userset; mso-width-alt: 1974" span=5 width=54><TBODY><TR style="HEIGHT: 12.75pt" height=17><TD style="BORDER-BOTTOM: black 1pt solid; BORDER-LEFT: windowtext 1pt solid; BACKGROUND-COLOR: transparent; WIDTH: 115pt; HEIGHT: 26.25pt; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: black 1pt solid" class=xl46 height=35 rowSpan=2 width=153 colSpan=2>Mi/Hr</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: #f0f0f0; BACKGROUND-COLOR: transparent; WIDTH: 41pt; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: windowtext 0.5pt solid" class=xl44 width=54>Gear</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: #ccffcc; WIDTH: 41pt; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: windowtext 0.5pt solid" class=xl32 width=54 align=right x:num>3.73</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; WIDTH: 41pt; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: windowtext 0.5pt solid" class=xl25 width=54></TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; WIDTH: 41pt; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: windowtext 0.5pt solid" class=xl25 width=54></TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; WIDTH: 41pt; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: windowtext 1pt solid" class=xl26 width=54></TD></TR><TR style="HEIGHT: 13.5pt" height=18><TD style="BORDER-BOTTOM: #f0f0f0; BORDER-LEFT: #f0f0f0; BACKGROUND-COLOR: transparent; HEIGHT: 13.5pt; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl45 height=18>1st</TD><TD style="BORDER-BOTTOM: #f0f0f0; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl39>2nd</TD><TD style="BORDER-BOTTOM: #f0f0f0; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl39>3rd</TD><TD style="BORDER-BOTTOM: #f0f0f0; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl39>4th</TD><TD style="BORDER-BOTTOM: #f0f0f0; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 1pt solid" class=xl40>5th</TD></TR><TR style="HEIGHT: 12.75pt" height=17><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext 1pt solid; BACKGROUND-COLOR: transparent; HEIGHT: 12.75pt; BORDER-TOP: #f0f0f0; BORDER-RIGHT: windowtext 0.5pt solid" class=xl37 height=17>RPM</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: #ccffcc; BORDER-TOP: #f0f0f0; BORDER-RIGHT: #f0f0f0" class=xl38 align=right x:num>600</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext 1pt solid; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: windowtext 0.5pt solid" class=xl41 align=right x:num="4.4623741585299914">4.5</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: windowtext 0.5pt solid" class=xl42 align=right x:num="6.2513439788415628">6.3</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: windowtext 0.5pt solid" class=xl42 align=right x:num="11.375396420514976">11.4</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: windowtext 0.5pt solid" class=xl42 align=right x:num="13.877983633028272">13.9</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: windowtext 1pt solid" class=xl43 align=right x:num="19.546455821166582">19.5</TD></TR><TR style="HEIGHT: 12.75pt" height=17><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext 1pt solid; BACKGROUND-COLOR: transparent; HEIGHT: 12.75pt; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl27 height=17></TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: #ccffcc; BORDER-TOP: windowtext; BORDER-RIGHT: #f0f0f0" class=xl33 align=right x:num>1000</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext 1pt solid; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl35 align=right x:num="7.4372902642166521">7.4</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl24 align=right x:num="10.418906631402605">10.4</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl24 align=right x:num="18.958994034191626">19.0</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl24 align=right x:num="23.129972721713788">23.1</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 1pt solid" class=xl28 align=right x:num="32.577426368610965">32.6</TD></TR><TR style="HEIGHT: 12.75pt" height=17><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext 1pt solid; BACKGROUND-COLOR: transparent; HEIGHT: 12.75pt; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl27 height=17></TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: #ccffcc; BORDER-TOP: windowtext; BORDER-RIGHT: #f0f0f0" class=xl33 align=right x:num>1500</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext 1pt solid; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl35 align=right x:num="11.155935396324978">11.2</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl24 align=right x:num="15.628359947103906">15.6</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl24 align=right x:num="28.438491051287439">28.4</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl24 align=right x:num="34.694959082570676">34.7</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 1pt solid" class=xl28 align=right x:num="48.866139552916451">48.9</TD></TR><TR style="HEIGHT: 12.75pt" height=17><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext 1pt solid; BACKGROUND-COLOR: transparent; HEIGHT: 12.75pt; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl27 height=17></TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: #ccffcc; BORDER-TOP: windowtext; BORDER-RIGHT: #f0f0f0" class=xl33 align=right x:num>2000</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext 1pt solid; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl35 align=right x:num="14.874580528433304">14.9</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl24 align=right x:num="20.837813262805209">20.8</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl24 align=right x:num="37.917988068383252">37.9</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl24 align=right x:num="46.259945443427576">46.3</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 1pt solid" class=xl28 align=right x:num="65.15485273722193">65.2</TD></TR><TR style="HEIGHT: 13.5pt" height=18><TD style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext 1pt solid; BACKGROUND-COLOR: transparent; HEIGHT: 13.5pt; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl29 height=18></TD><TD style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: #ccffcc; BORDER-TOP: windowtext; BORDER-RIGHT: #f0f0f0" class=xl34 align=right x:num>2500</TD><TD style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext 1pt solid; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl36 align=right x:num="18.593225660541631">18.6</TD><TD style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl30 align=right x:num="26.047266578506513">26.0</TD><TD style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl30 align=right x:num="47.397485085479069">47.4</TD><TD style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl30 align=right x:num="57.824931804284468">57.8</TD><TD style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 1pt solid" class=xl31 align=right x:num="81.443565921527423">81.4</TD></TR></TBODY></TABLE>

2011 F250SD 6.7 CC/LB Lariate Ultimate on order

 

OK guys, I am back and I am not confused. My original point was that ford gave up some amount of power with the higher 373 geared differential. I have read all of the above posts to the contrary and concluded that i did not express myself well. So here goes one more try: "no matter how much horse power the motor makes and no matter how low the tranny is geared that power must be transfered from the straight drive line to the wheels. That work is done (mostly) by the differential. There is some level of resistance (rocks in the truck bed, hogs on the trailer, degree of climb on the mountain) that will be over come (the truck will move) by a differential with a 4.30 to 1 gear set but will not be overcome (the truck will stall or something will snap) with a 3.73 to 1 gear set". I don't know what that resistance level is or how to determine it, but Ford does. If the lever(from the farm boy above) is long enough or the tranny is geared low enough when the 373 differential reaches that point something will snap, mostly the pinion yoke. If not the engine will stall. Now, I realize that in the course of normal operation that loss of power will probably never be noticed and that most folks would rather have the fuel economy, but that does not change my point, ford gave up some power to obtain the higher MPG. That's it I'm done with this topic. Love y'all but I gotta move on.

 

Next weekend I'm towing 3 horses in a steel bumper pull for about 750 miles. I'll give you some mpg numbers when I get back if you are still interested.

mikE(farmer boy)

 

right, the newer truck with the higher ratio will not be able to move a freight train to speed as fast.. BUT, from the typical user of the vehicle, (us), the difference will be so minor as to not be important. So, while you are technically correct, I think they have mitigated just about all of the effect, and improved the mileage..

Sam

 

I'm an auto engineer.

It's not just axle ratio and trans ratio. To really determine gradability and startability you have to look at the whole system from the crankshaft to the road. Thus for highway cruising you need trans ratio, axle ratio, and the tire's dynamic loaded radius at that speed. For startability you need to look at torque converter ratio, trans ratio, axle ratio, and the static loaded radius of the tire. All this put together gets your calculation for torque put to the ground (for the other engineers out there- yes I neglected driveline losses).

With 6 speed transmissions the trend seems to be using faster axles and then a deeper first gear in the trans to offset this. With 4 speed auto GM 1500 trucks had ~2.8 low gear with 3.23 or 3.73 or 4.10. Now 3.08 axle is standard but the low gear in the 6 speed trans is ~4:1. Same can be said of the larger pickups. More speeds in the trans can let you have better cruise RPM from a fast rear end and still have the startability due to a deep low gear in the transmission. The disadvantage to this is more torque on the propshafts.

Toyota uses the opposite approach. They have a 4.30 rear but their six speed trans has a very fast 6th gear 0.588:1.

There are many ways to skin a cat, you need to look close at your application. If I were buying a new diesel truck and I towed heavy everyday I'd look at one of the lower (ratio)rear axle ratios to optimize mileage and performance at the higher weight. In my case, since I don't tow that often, I'd get the highest (lowest number) rear end to save fuel most of the time and deal with reduced performance and driving in a lower gear once in a while for towing.

 

Stanley, I've been following this thread and have held off for this long, but I just can't take it anymore!

As others have said, you have to look at EVERYTHING to get a good idea on how a truck is geared.

For example, my work truck at my previous job was a 2006 Kenworth T600 tractor with a max GVWR of 80,000 lbs. Had tandem drive axles rated for 34,000 lbs.

These axles had 3.25 gears!

And this was FINE. My truck had a 13-speed transmission, and the first gear was somewhere around 16:1. Meaning pedal on the floor, engine at redline, I was going 4 MPH. So the total gearing wasn't a super-tall 3.25:1, but in first gear it was (16 x 3.25=)52:1!

So you take the new 2011 SD trucks. Let's look at first gear!

Your 2008 has a 3.11 first gear and 4.10 rear axle. Meaning your gearing advantage is 12.75, or your engine turns 12.75 times each time the rear wheels turn once, if the torque converter was locked.

The 2011 has a 3.97 first gear and 3.73 rear end gears. This equals a 14.8:1 gearing advantage! This is the equivalent of your '08 having 4.75 rear end gears!

So due to deeper transmission gearing they were able to actually increase the gearing advantage given to the engine to get a load moving while reducing the gear reduction in the rear differential. This also improves efficiency, as the driveshaft and transmission output shaft are now moving slower to achieve the same speed as your 4.10 geared '08 would in top gear.

Nothing was given up, nothing was sacrificed. The 5R110 needed deeper rear end gears to provide an adequate gearing advantage to the engine. The 6R140 is geared deeper and doesn't need it!

 

Crazy, given the amount you missed my point by I'm glad you waited. I'm trying to get out of this thread but I keep getting sucked back in. So here goes, once more: 1. My truck has a 4.30 diff. It's in my sig. You need to refigure. Besides, final gear ratio of the entire truck is not what we are discussing, we are comparing (or at least I am) the 4.30 to 1 differential with the 3.73 to 1 differential. 2. All i said is that Ford gave up "some power" for fuel economy. They did and I stand by that statement. 3. I am not attacking ford, I have owned them on and off for 50 years. 4. It has not yet been proven that the 11's will be any more fuel efficient than the 08-10's. Or cheaper to operate when you include the euretha or whatever it's called. 5. nobody has provided the 11 weight ratings from Ford. Let's see if I would need a 450 with a 4.30 diff to replace my current 350. 6. I'm impressed that you drove one of those big trucks that bend in the middle. I'm also impressed that the guy ahead of you is an automobile engineer, me i fell off a turnip truck last night. What doesn't add up for me is that both of you and a lot of other people keep trying to prove my statement wrong for no apparant reason. I honestly don't get it.

 

Here are the towing charts.

From Ford's website, here are the 2011 specs:



And the 2008 specs from FTE:





With 3.73s, the 2011 DRW truck is rated for the same 26,000 lbs GVWR that your 2008 with 4.30s. It appears that they rate the 2011s for around 500 lbs heavier than the 2008s, probably due to decreased weight. Also the 2011 in the same configuration as my truck, but with 3.31s as opposed to my 3.73s is rated for 1,000 lbs more than mine is.

 

OK. I've got an '11 F250 KR with 3:55 ELR. First tank without trailer mostly in town, 40 mph, mixed with some highway...LOM is saying 19.6. I mostly just observe these forums and gain info but wanted to be one to post on this topic.

I traded in my 2010 for this truck with just one drive. Here are my reasons:

1) I reset the LOM for a 20 mile run and was immediately impressed...in areas the truck easily read 25 mpg
2) The ride is incredibly different. My truck felt more firm, louder interior, seemed more truck duty worth. The new truck felt softer, more gentle...but with a short time way more preferred
3) I feared, I believe rightly so, that with rising incentives on the 2010's that the trade in value would fall dramatically with those not wanting lower mpg on older models

I don't just use my truck for bread runs or to impress...it hauls for me...I pull a 20' trailer often with landscape materials and machinery. But once you go KR, there's no going back. Besides I like to clean it up and take the family in it. Invision headrest going in Tuesday for the lil ones.

I get a new truck about every 2 years. IMO this is going to be a huge hit for Ford yet again. I also have a 2010 Platinum for the wifey. Yes I'm biased after owning the rest and having irreconcilable differences.