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olds 8.5
OK- Well let me tell you...A true olds 8.5 rear is a tough id in the junk yard.
The picture supplied is the olds 10 bolt 8.5...AND yes it does look just like a 8.2 chevy rear...lol.
The buick 8.5 will have the scalops in the cover at 9 and 3 oclock and the triangular (normal casting) at 5 and 7 o'clock these casting triagle off the bottom of the housing casting are on every 10 bolt 8.5 all the way to 2008 trucks too. OLDS 71 72 were the only castings that were NOT.
WELL HOW THE HECK CAN i TELL difference?
-1. if the yoke has 2 straps and 4 bolts to hold the u-joint in the yoke
-2. must have bolt in axle 1971 1972 a-body
These are absolutes!!!
8.2 Olds will have U-bolts to hold the u-joint in .
and the axle will also have bolt in axles
If you supply pictures I will id it for you if you still are stuck.
here are some other absolute differences
-10 bolt 8.2 olds will have 27 spline yoke
-10 bolt 8.5 will have 30 spline yoke
10 bolt 8.2 axle shafts are 28 spline 60 degree spline
10 bolt 8.5 axle shafts are 28 spline 45 degree spline and WILL NOT FIT INTO A 8.2 SIDE GEAR UNIT. 8.2 WILL FIT THE 8.5 BUT WILL BE A BIT SLOPPY.
Hope this info helps there is always more to learn and again jdrace.com is all GM rear axle info questions are always welcome. I try to hit as many forums as i can in my free time to help. Jim
chevy 8.2 rears and c-clip axles and never had bolt in axle shafts
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