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G3GM 1973 to 1977 A-bodys. Chevelles, Monte Carlos, El Caminos, Laguna, 442, Cutlass, Malibu, GTO, LeMans, Century, Regal, Grand Am, Grand Prix, Sprint, Gran Sport, Can Am, Hurst-olds, and other 73-77 A-bodies


8.5 rear ends in the 73s

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Post by BlackChevelleSS Tue Jul 15, 2008 1:50 am

I was wondering is the 73 model 8.5 rear end a bolt in axle or a c-clip axle rear end? Ive got a posi setup for a 8.5 bolt in axle rear but didnt know if itd work or not.

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Post by Guest Tue Jul 15, 2008 7:00 pm

The chevelle uses a c-clip type rear end. When you say a bolt in rear end are you refering to the axles being bolted in? Don't quote me on this, but I don't think they are interchangeable, from what I gather, the third member is specific to c clips axles and bolt on axles.

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Post by JB2wheeler Wed Jul 16, 2008 12:04 am

Yes, they are two differant animals, but My dad bought mhis (mine now) 74 Elky brand new and it has the 74 Oldsmobile rear end with NO C-clips. When they ran low on Chevy rears they just put an Olds in it. There is a code number on the passenger side axle tube on the front side that gives the make (Olds,Chevy, etc) and ratio and whither its an open or posi. JB
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Post by BlackChevelleSS Wed Jul 16, 2008 1:26 am

ok, damn well looks like well be looking for a posi and some gears

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Post by BlackChevelleSS Mon Nov 10, 2008 2:30 am

THEY HAVE FACTORY BOLT IN AXLES. At least both of our 73s do.
The malibu is 2.73 non posi and the SS is 3.42 non posi

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Post by JB2wheeler Mon Nov 10, 2008 9:07 am

I now have a 3.42 posi bolt in set of gears in my Oldsmobile rear end with 31 spline Moser axles. It has had some pretty hairy burnouts, but no serious load with big slicks put on it. JB
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Post by BlackChevelleSS Mon Nov 10, 2008 11:51 am

we just put a mini spool in the malibu and its doing great. We arent running slicks tho just some little 14" tires

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Post by BlackChevelleSS Sat Dec 27, 2008 2:22 am

man just pulled the wheels off the blue ss and pulled the drums and it isn't bolt on axles, guess you were right about the olds thing. kinda weird that one of our 73s has bolt ons which is the 273 rear and the cclip rear is the 342 gears


Last edited by BlackChevelleSS on Sat Dec 27, 2008 12:50 pm; edited 2 times in total

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Post by ant7377 Sat Dec 27, 2008 11:32 am

From what I understand the axel's and bearings are different but the other stuff (gears carrier,are the same)
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