chuckie311;
Do have the 6sp.man or 7sp.a/t?
As i haven't made a gear swap/just dyno comparison between 4th & 5th gears...
The torque made a larger increase than the hp did (in 5th 1:1),as my jump is from 1.41 to 1:1 (50mph difference w/3.36's)
I can see a stick shift Z,not as big of difference (1.27 to 1:1),,,but i see your point w/4.08's not making much of a difference between the 2.
Firehawk is experimenting w/wheel tire weight & differences in VLSD vs. Helical locker.
Unsure on these differences; as from old school (Chevy/Ford) the 9" ford diff supposively took less hp to turn than the GM 10/12 bolt.
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