"G" Body suspention tips ?

[GTO/GN]

I have been using the the 8.5 ten bolt in my Grand National. I put Moser 30 spline axles, Eaton posi and c-clip eliminators. Using the stock 3.42 ring and pinoin and it has held up to countless 25 lbs of boost trans brake leaves and it has gone 9.64 @ 140.11...

[CJohnson]

Ya the 8.5's are stronger than some people give them credit for, my old man runs one in his racecar with stock 28 spline axels auburn posi and 3.91's

[BRUCE COMPTON]

Craig,

We have built several G body cars including a stock eliminator Malibu wagon, If you want or can give
me a call and I will tell you about the stuff we have found. Most of the tips you have gotten are good
but there is more. Bruce Compton Boise,Idaho 208-362-3570

[Redlight]

I have gone threw some changes on my Gbody (bracket not stock) at one point ran this:

Front: Stock SBC spring with 1 coil removed, loose front suspension with poly bushings,lower arms "level" with ground,5 inches travel, cheap 3 way shocks set driverside 70/30 pass.side 90/10

Rear: Eibach lowering springs,boxed lowers with poly, adjustible uppers with TRZ joints in the 12 bolt,single adjustible shocks, single air bag (7 to15#), -2 pinion angle. 30x9 radial slick

Car would leave hard 1.44 to 1.46 but twisted bad and was a handfull down track.

After many upgrades, double adjustible shocks all around, HR&stuff bar,no air bag.

The car leaves straight and now can be driven down track with one hand.

Since someone mentioned the bracing ,which these car NEED, here you go.
I am new to the "stock" deal so I don't know how much of this is "legal"


I made this up for another board.


GM body braces, forgot to make a legend on this one:

Now the tuff one to do, overlay:

Hope you enjoy."

[holben]

Looks like they've got you on the right track. You will most definitely want a rear anti-sway bar to counter the body roll that is increased when you raise the upper control arm rear mounting point (center of the car). The 8.5" 10-bolt that was made for these cars in the mid-eighties by Buick is a very strong piece with a spool and axles. Since you already have the 12 bolt I'll stop right there.
Good luck with your project.
Don

[Curt Rees]

I just added a sway bar. I have a 12 bolt with 6:14 gears. The car leaves nice and level now (see picture in Pierre National Open pics) and picked up up a 10th in the 60' time. I run Hoosier 9/30 radial tires.

I run 3 way shocks in the rear set at 50/50 and 70/30. I have Jeg's adustable upper control arms with AFCO bushing. I run 3 way shocks in the front set at 90/10, Moroso springs. I am going to change the front control arm bushings.

#5457

Curt Rees