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Author Topic:   Buick Grand National
posted June 02, 2003 05:53 PM
as far as i know the only difference from any other metric car in the rear is that it had a 8.5 rear end instead of a 7.5

nate 11
posted June 02, 2003 10:18 PM
one of my sponors brought me a rear end from a mid 80's camero for the disc. brakes and it didn't have upper links. it had some kind of torque arm bracket on the top. it was 7.5 rearend. hope this helps....

posted June 03, 2003 08:31 AM
Our donor car this year was a Buick Grand National and it had no such thing. Sorry.


posted June 03, 2003 11:58 AM
I have an 87' GN. The rear suspension they were referring to is on the GN with the GNX option. There were only about 520 of these made. But, they were made from the factory. They did have a torque arm that mounted to the rear end housing and mounted to the frame in front of the rear end. It was a special casting of the rearend though. If I'm correct. If rules would allow "stock concept" of rear suspension, than you might get away with making something similiar. If it required stock components, you'd be better off buying a new car than getting your hands on one of those rear ends.

Good thinking though.

posted June 03, 2003 02:03 PM
Ok, you got my curiosity up and I started looking where I knew to for a little more info on the rear suspension setup of the GNX. I was wrong about the special cast of the rear end. It's actually a special cast rear end cover and that's were the good stuff starts. Here's a link that shows you the GNX rear suspension.

Kirban sells lots of stuff for GN's. Let me warn you again, it's not cheap.

Happy Hunting,

[This message has been edited by UFnARacing (edited June 03, 2003).]

posted July 13, 2003 12:29 AM
sunbirds used that setup in the rear

posted July 13, 2003 01:47 AM
I tried to run that past the tech officials a few years back. They said it fell into that factory "sports car class". He told me for the same reason you cant run a corvette..
The production run of them was real low, also.. But hey give it a try.
Does your class allow for year interchanges?
A different sanction from what I run allows a 1 year overlap of cars. Meaning a 78 monte carlo can have a 77 monte carlo front clip(camaro). An 81 camaro can have an 82 rear suspension. Read the rules closely!!


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