Quote:
Originally Posted by Skip Fix
So if only 64-65 were shorter was the a "short" 12 bolt? I would thin GM/Chevy would not put a 12 bolt in since unless you got a rare 65 396 Chevelle would have just been a 283 or 327 in it.
What is the flange to flange length of short and "regular" length A body rears? I thought the "regulars" were the same width as second gen as the axles length is the same.
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The early Malibu/Elco/Chevelle 12 bolts were first installed in '65 Chevy A-bodies behind Chevys 4bbl small block engines. 6 cyl & 2 bbl V8 cars received an 8.2 Chevy rearends ...different than early BUICK 8.2's & early Pontiac 8.2's. This width of 12 bolt & 8.2 Chevy 10 bolt A-body rearend continued through '67 production. One of the rarest, & most expensive factory 12 bolt rears ever built was used in the 201 '65 Z16 Chevelles. Main difference, c-clip axle housing ends took a bigger diam axle.
The '64 & '65 & very early 1966 PONTIAC 8.2 10 bolt rears & the '64 & '65 BUICK 8.2 are also of the narrow variety. Have pulled numerous "short" Pontiac 8.2 10 bolt axles out of original housings installed in early '66 model Pontiac Tempest & LeMans. In the late 80's through the 90's in the country yrds, crusher yards, & early Pick-N-Pulls, I routinely pulled used sealed bearing axles out of '64-69 GM A-body rears. Sealed axle bearing axles have an eventuality where the bering seizes & chew up the axle mating surface, I've literally cut the bearing collars off a TON of original sealed axle bearing axles.
'68-72 Chevy 12 bolt A-body rears share the same width axles as the '70 F-body 12 bolt axle. McKinnon plant 12 bolt A-body rears were assembled with their own specific c-clip axle, different style backing plates for non Chevy applications, as well as 3R pinion flange.