Re: 12 Bolt vs 10 Bolt Rear
To my knowledge there are not any Bolt in 12 bolt options for the 77-96 b body platform. You would have to use an A or G body unit and make your own upper arms, as well as change the lower bracketed a bit. Now considering the only downside to the 8.5 is gears, as the bearings, axles and even pinion size are the same as a 12 bolt, I would buy a good quality gear set and run it. You can get gears all the way to 5.57, just not pro gears. That being said my 12 bolt in the chevelle has not had pro gears for the 5 years I’ve ran it and I’ve had no issues. Your results may vary of course.
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Chris Chapman
1969 Chevelle
NHRA F-G/SA 1090
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