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Old 12-28-2017, 11:15 PM
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RockBit RockBit is offline
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Join Date: Jun 2014
Location: Dallas, TX
Cobra Make, Engine: ERA #812 427/482 FE
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Frankym - From the data, it appears that you have a 4.56 gear in your Ford 8.8. That is really low, as you know. You would be better off with either a 3.31 or 3.55 gear.

With the 3.31, RPM versus speed in 5th gear would be:
60 @ 2100
70 @ 2450
80 @ 2800

With the 3.55 in 5th gear you would get approximately:
60 @ 2250
70 @ 2620
80 @ 3000

Either of these gear choices would make first gear more useable.
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