98-02 posi from camaro
- Thread starter poppajohn90
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i read that the 8.5 28 spline axles have to be ground to fit the 7.5 carrier 28 spline for the c clips , is this true
a '71 442 rear axle will bolt in just like a any other 10 or 12 bolt from a gm "A" body car from 64-72. you will need special upper control arms. a '71 442 axle has bolt in axles, no "c" clips. and i believe the "71 was the first year for the 8.5" ring gear, in place of the 8.2" that chevy and pontiac were running.
poppajohn - I went one step further and used JY 2WD 28 spline S10 axles with a Torsen from '00 Camaro. I had to add 1/4" spacers to the axle flange because the S10 axles were a minor bit longer. Used that setup for a full season of abuse at 375 WHP (estinate 475-500 crank HP.) Worked like a champ and the spare housing with the complete setup is in my basement in case I break the current rear. The Torsen carrier will take a ton of abuse, just be ready to drive when it goes from spinning to hooking up.
The 8.5 GN/442 housing is identical to a 7.5 outside of the pumpkin. Had not heard about the grinding issue. I am about to try the Torsen swap, so I will let you know what I find trying to use the old GN axles in my 7.5.
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another couple of weeks i will be building the rear axle. ill let you know how it came out
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