Rear Axle Identification

[LSJM1]

The olds and buick 71-72 8.5 with the bolt in axles takes the same gears as any other 8.5 rear.I know this because I just swapped out 2.73s for 3.42s in my wifes 72 cutlass,I got the 3.42s from a 90's ex cop car caprice in the boneyard..The carrier unit won't work because after 1989 they went to 30 spline axels in all 8.5 rears

 

[gpexpress]

that sucks my gp has GH2 2.29 gears. i raced 1 car so far and lost. it was to a 2002 grand prix. 442Jayp what motor and trans are you runnin. as for mine its a stock chevy 305 and im guessin a 200r trans

 

[Egknz86]

Posi

did the 83 Hurst Olds come with Posi Trac rearend ?

 

[njRegal86]

Does anybody have a spare posi that they don't want, I will buy from you. I have the 7.5 with 2.14 axle ratio.Im in desperate need of more power.

 

[gp02a0083]

Re: Posi

did the 83 Hurst Olds come with Posi Trac rearend ?

i think they could have come with the g80 option. The rear end i got i think was out of a 84 with an open carrier 3.73 8.5

 

[1978Cutlass408]

My axle tube says N3 8 329
1978 Olds Cutlass

 

[85Oldsmobile]

Any one have any idea what spline axles came in 1986 442 8.5?

 

[jrm81bu]

Any one have any idea what spline axles came in 1986 442 8.5?

The 8.5's had 28 spline axles.

 

[85Oldsmobile]

Any one have any idea what spline axles came in 1986 442 8.5?

The 8.5's had 28 spline axles.

Thanks for the info.

 

[1980Halfbreed]

Needing some info. I'm on my 4th rearend because its the weakest link and now its time to get serious but not broke. Besides another g-body because 8.5 g-bodys are difficult to find what other chevy 8.5 is close to a bolt in. I've heard that A body chevies are close but need tweaking for the upper control arms. I have a 9 inch from a versailles but finding a competent welder is scarce in my neck of the woods.