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Old Oct 13, 2004 | 06:53 PM
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Question '04 F550 Questions

Hey guys I,m looking into a 04 F550 6.0L s/c 4x4 auto with a dump body. what RPM am i going to see on the highway? and if anyone has any mileage figures on one of these that would be great, Thanks
 
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Old Oct 13, 2004 | 07:21 PM
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Originally Posted by Fuzion01
Hey guys I,m looking into a 04 F550 6.0L s/c 4x4 auto with a dump body. what RPM am i going to see on the highway? and if anyone has any mileage figures on one of these that would be great, Thanks
4.88's or 5.13's?
 
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Old Oct 14, 2004 | 05:07 PM
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4.88 sorry i forgot to put that
 
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Old Oct 14, 2004 | 08:14 PM
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you dont get a choice of gears in a 550. u get 4.88 with the 6.0 and 5.13 with the v10.


u will get:
55mph=2250
70=2650
83(limiter)almost 3000

thats perfect for loads. and if ya want a bit more speed, sell the 225/70's that come on it, and get a set of 245/70's....they have a way better rating anyway and they run with 110psi instead of 95.

get it, u wont regret it
 
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Old Oct 15, 2004 | 06:51 AM
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You don't happen to know the RPM at 75 with 245/75Rx17 with 4:10
 
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Old Oct 16, 2004 | 07:51 AM
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mileage

I have a 550 with 488 gears keep it under 60 will get 12mpg,load it up, pedal to the medal your looking at 8.5
 
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Old Oct 16, 2004 | 07:52 AM
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mileage

O!!!!!!!! by the way yes i have a 6L
 
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Old Oct 16, 2004 | 08:13 AM
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Originally Posted by lookout
O!!!!!!!! by the way yes i have a 6L
WELCOME to the site, please read the Guidelines… Check out the list of forums and make sure you read the headings and Read First: notices in each forum.

Be sure to check out the 6.0 Bible…..great reading
http://dan.prxy.org/Truck/6L_bible_html/html/TOC.html
http://www.backglass.org/duncan/ps60_manual/

…. In the upper right hand corner of your screen check this out PARTS SHOP for all your “trucking” needs

Must read
http://www.clubfte.com/users/monsta/SuperDutyFAQ.html
Enjoy FTE
 
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Old Oct 16, 2004 | 09:56 PM
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Originally Posted by lookout
I have a 550 with 488 gears keep it under 60 will get 12mpg,load it up, pedal to the medal your looking at 8.5
03 or 04? i get 15mpg with a 35'gooseneck empty(65-70mph). and about 10 with 20K on it.

i am seeing around 17-18 now with out a trailer.

03 F550 CC with 6.0 and 4.88's

but i have the intake exhaust tuner and water inj and EGR disconnected with syn oil, and 19.5" tires on trailer.
 
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Old Oct 17, 2004 | 06:54 AM
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Originally Posted by bighoss550
03 or 04? i get 15mpg with a 35'gooseneck empty(65-70mph). and about 10 with 20K on it.

i am seeing around 17-18 now with out a trailer.

03 F550 CC with 6.0 and 4.88's

but i have the intake exhaust tuner and water inj and EGR disconnected with syn oil, and 19.5" tires on trailer.
You don't happen to know the RPM at 75 with 245/75Rx17 with 4:10..ok I will change it a bit...what is your RPM at 75
 
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Old Oct 17, 2004 | 09:27 AM
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Originally Posted by Tim Lamkin
You don't happen to know the RPM at 75 with 245/75Rx17 with 4:10..ok I will change it a bit...what is your RPM at 75
my rpm at 75 is about 2850.....
the tires are close to the same size, but the gears are way off.
my tires are 32.1" and those are 31.7"

so with that difference and the gearing difference factored in, the 4.10 with those tires is turnin at 2440rpm at 75.....
 
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Old Oct 17, 2004 | 01:14 PM
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Bummer I thought the 245/75Rx17 were 30 or 30.5
 
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Old Oct 17, 2004 | 08:44 PM
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Originally Posted by Tim Lamkin
Bummer I thought the 245/75Rx17 were 30 or 30.5
245/70-17's would ride and haul nice and be 30.68" tall
 
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Old Oct 18, 2004 | 06:15 AM
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Well that is good I am not as far off as first thought.....ride good..why becasue of the 17's?
 
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Old Oct 18, 2004 | 05:30 PM
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Originally Posted by Tim Lamkin
Well that is good I am not as far off as first thought.....ride good..why becasue of the 17's?
70 is the beginning of the "lo-pro" sizes. but not too much. they are stiff but they are tall enuf to give a little when u load em.....
thats why ford puts 225/70-19.5's on 550's
 
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