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Old 06-05-2018, 07:59 PM   #7
Jay2Cor517
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Join Date: Dec 2014
Location: Jacksonville
Posts: 75
Re: GM 8.5" rear end spline count

Quote:
Originally Posted by 44boggers View Post
https://www.summitracing.com/int/par...a556/overview/

This is for a 28 spline 10 bolt 8.5"
(Open mouth and insert foot or keyboard) Good catch 44boggers, I stand corrected. I simply should have stated the obvious, the 30 spline axle is stronger and would probably be a better choice for those who decide to change the ratio from the 2.73 to a 3.73 or numerically higher gear set with performance mods--more horsepower, bigger cam, trips to dragstrip etc.
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