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Old 04-15-2018, 08:44 PM   #5
62 Barnfind
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Join Date: Jan 2012
Location: Killeen, Tx
Posts: 1,348
Re: GM 7.5 rear axle

Quote:
Originally Posted by cal1320 View Post
70s era axles had numerically low gears because overdrive wasnt currently offered. Thats what you want if you dont have overdrive. Check the ratio. It could be anything from a 3.08 down to a 2.56 . Mine was from the od era and is a 3.42
I don't know what year its from or the gear yet . I will have OD on this truck.
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1962 Chevy C10 Stepside
62 Barnfind
My build tread: http://67-72chevytrucks.com/vboard/s...d.php?t=507513
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