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Old 09-22-2021, 11:34 AM   #37
NSSGTO
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Default Re: 1968 Pontiac GTO

Quote:
Originally Posted by Stan Weiss View Post
I have never done a 3.90:1 to 4.33:1 gear change. But IMO I would be very surprised if you saw anymore than a .1 of second improvement.

Stan
Agree, I swapped from a 3.73 to a 4.10 and ran the exact same #. Swapped to a 3.90 and picked up about .05 over the 4.10.
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