Stock Cam Specs?
<table align="center" border="1" cellpadding="6" cellspacing="0" width="550"><tbody><tr><td colspan="2"><table border="0" cellpadding="2" cellspacing="0" width="100%"><tbody><tr><td class="formTitlesLeft" width="20%">Valve Setting:</td><td class="formSubtitlesRight" width="14%">Intake</td><td class="formEntries" width="14%">.000</td><td class="formSubtitlesRight" width="11%">Exhaust</td><td class="formEntries" width="15%">.000</td><td class="formEntries" width="26%">HOT</td></tr></tbody></table></td></tr><tr><td colspan="2"><table border="0" cellpadding="2" cellspacing="0" width="100%"><tbody><tr><td class="formTitlesLeft" width="6%">Lift:</td><td class="formSubtitlesRight" width="29%">Intake @Cam</td><td class="formEntries" width="7%">300</td><td class="formSubtitlesRight" width="10%">@Valve</td><td class="formEntries" width="7%">550</td><td rowspan="3" class="formtext" valign="top" width="28%">All Lifts are based
on zero lash and theoretical rocker arm ratios.</td></tr><tr><td rowspan="2" class="formSubtitles"> </td><td class="formSubtitlesRight">Exhaust @ Cam</td><td class="formEntries" width="7%">300</td><td class="formSubtitlesRight">@Valve</td><td class="formEntries" width="7%">550</td></tr><tr><td class="formSubtitlesRight">Rocker Arm Ratio</td><td class="formEntries" width="7%">1.80</td><td class="formSubtitlesCenter"> </td><td class="formSubtitlesCenter"> </td></tr></tbody></table></td></tr><tr><td colspan="2"><table border="0" cellpadding="2" cellspacing="0" width="100%"><tbody><tr><td class="formTitles" width="16%">Cam Timing:</td><td class="formEntries" width="11%">VALVE</td><td colspan="3" class="formEntries">@.006</td></tr><tr><td class="formTitles">Lift:</td><td class="formTitles"> </td><td class="formSubtitles">Opens</td><td class="formSubtitles">Closes</td><td class="formSubtitles">ADV Duration</td></tr><tr><td class="formSubtitlesRight" width="16%"> </td><td class="formSubtitlesRight" width="11%">Intake</td><td class="formEntries" width="16%">14.0 BTDC</td><td class="formEntries" width="17%">54.0 ABDC</td><td class="formEntries" width="40%">248.0 °</td></tr><tr><td class="formSubtitlesRight"> </td><td class="formSubtitlesRight">Exhaust</td><td class="formEntries">67.0 BBDC</td><td class="formEntries">7.0 ATDC</td><td class="formEntries">254.0 °</td></tr></tbody></table></td></tr><tr><td width="73%"><table border="0" cellpadding="2" cellspacing="0" width="100%"><tbody><tr><td colspan="7" class="formTitlesLeft">Spring Requirements: Triple Dual Outer Inner</td></tr><tr><td class="formSubtitles" width="21%">Part Number</td><td colspan="6" class="formEntries">37830</td></tr><tr><td class="formSubtitles">Loads</td><td class="formSubtitlesRight" width="10%">Closed</td><td class="formEntries" width="7%">85</td><td class="formSubtitlesRight" width="9%">LBS @</td><td class="formEntries" width="9%">1.640</td><td class="formSubtitlesCenter" width="6%">or</td><td class="formEntries" width="38%">1 41/64</td></tr><tr><td class="formSubtitlesRight"> </td><td class="formSubtitlesRight">Open</td><td class="formEntries">195</td><td class="formSubtitlesRight">LBS @</td><td class="formEntries">1.110</td><td> </td><td> </td></tr></tbody></table></td><td width="27%"><table border="0" cellpadding="2" cellspacing="0" width="100%"><tbody><tr><td colspan="2" class="formtext">Recommended RPM range with matching components</td></tr><tr><td class="formSubtitles" width="78%">Minimum RPM</td><td class="formEntries" width="22%">1600</td></tr><tr><td class="formSubtitles" height="24">Maximum RPM</td><td class="formEntries">5500</td></tr><tr><td class="formSubtitles">Valve Float</td><td class="formEntries">6100</td></tr></tbody></table></td></tr><tr><td colspan="2"><table border="0" cellpadding="2" cellspacing="0" width="100%"><tbody><tr><td class="formTitles" width="16%">Cam Timing:</td><td class="formEntries" width="10%">VALVE</td><td colspan="4" class="formEntries">@.050</td></tr><tr><td class="formTitles">Lift:</td><td class="formTitles"> </td><td class="formSubtitles">Opens</td><td class="formSubtitles">Closes</td><td class="formSubtitles">Max Lift</td><td class="formSubtitles">Duration</td></tr><tr><td class="formSubtitlesRight" width="16%"> </td><td class="formSubtitlesRight" width="10%">Intake</td><td class="formEntries" width="15%">(4.0) ATDC</td><td class="formEntries" width="17%">36.0 ABDC</td><td class="formEntries" width="13%">110</td><td class="formEntries" width="29%">212.0 °</td></tr><tr><td class="formSubtitlesRight"> </td><td class="formSubtitlesRight">Exhaust</td><td class="formEntries">49.0 BBDC</td><td class="formEntries">(11.0) BTDC</td><td class="formEntries">120</td><td class="formEntries">218.0 °
</td></tr></tbody></table></td></tr></tbody></table>
Last edited by ReAX; Jun 9, 2007 at 03:15 PM.
Non-PI:
Intake .462" lift/201 @.050"
Exhaust .462" lift/208 @.050"
114 intake C/L
113 exhaust C/L
PI:
Intake .507" lift/200 @.050"
Exhaust .534" lift/210 @.050"
114 intake C/L
115 exhaust C/L
The duration and centerlines are so close that I'll say the slight differences seen are production tolerances.
JL

I probalby know the answer to this qeustion but have to be certain, are these cam specs the same for the V10?
PI vs NPI-data - Modular Depot Forums
It took me along time to put all of that data together and do the comparisons. it's a bit of a long read,but worth it.
Everything I've seen indicates that the 6.8L uses the exact same cam lobes as the 5.4L and the 4.6L. Ford mass produces the lobes and the camshaft tubes and press-fits them for assembly and final griding to spec. They're not gonna waste time setting up their machinery to grind different lobe profiles when they control engine power/torque with the intake manifold design.
JL
yes it is rather amazing how exhuast and intake sizing and flow along with tunned ramming have an effect on an engines power curve let alone feel to the driver, Though I know can get non pi heads to make more power

then pi heads
when you posted the flow numbers do those cylinder heads still have the stock valve angles?
aswell were the pi heads ported along with the non pi heads? what I mean is are the flow numbers the results after both heads have been ported?
say you wouldn't happen to know what the 3v cam lift is would yea?
yes it is rather amazing how exhuast and intake sizing and flow along with tunned ramming have an effect on an engines power curve let alone feel to the driver, Though I know can get non pi heads to make more power

then pi heads
when you posted the flow numbers do those cylinder heads still have the stock valve angles?
aswell were the pi heads ported along with the non pi heads? what I mean is are the flow numbers the results after both heads have been ported?
say you wouldn't happen to know what the 3v cam lift is would yea?
Don't have any data on the 3V cams.
JL
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