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Old 01-20-2021, 08:34 AM   #10
68 C10 Driver
Senior Member
 
Join Date: Oct 2020
Location: Kathleen, GA
Posts: 623
Re: Differential Gearing Question

Quote:
Originally Posted by 724jacks View Post
I drove my 71 chevelle with 3.31s and an m20 for a while, and it was OK. I won't go any numerically lower than 3.23. Another option if you want a 4 speed would be a 2.88 1st gear ratio super t10. You could run a 3.08 in the rear and first would be similar to the m20 and a 3.42 rear.

Just my .02

Good luck

Here is a link with t10 ratios
https://www.chevelles.com/threads/su...-ratios.23335/
Thanks! I already have the M20, so I want to use it for a while. Trying to stay somewhat period correct for the truck.
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