Don Terrill’s Speed-Talk

I need help making my car go straight I have a 83 G-BODY with a SBC approximately 600 HP it has MOROSO Trick SPRING front & back it leave with the left wheel 2 ft. Off the ground I would like to make my leave Straight as possible any idea thanks

What else have you done? Sway bar? Control arms? Shock settings? Weight distribution?

Nothing else just trick Spring and shocks 90/10 front and 50/50 rear with stock grand national rear Inc. Stock. Sway bar

WWW.spohn.net They have a rear anti roll/sway bar that is adjustable.... and have instructions on how to cure what you are experiencing!

Wildrides antiroll bar. Found mine on eBay. I fixed this Astre with an anti roll bar. Launches perfectly level now. Was leaning so bad right rear was rubbing the top of wheel well.

The old "shade tree" way is to use coil-overs or air-bags that you can adjust as well as an adjustable rear sway-bar. Please think about it before you jump.....

pdq67

Get rid of the moroso springs. Put regular stock springs in the front and qa1 coil over springs in the rear. Get the best pair of shocks you can afford and get an anti roll bar in the rear. Make sure you have good control arms in the back as well. That should get you where you want to be.

The stock rear sway bar on a g body bolts to the lower control arms. At your power level even with a big sway bar like the old 1-3/8" ATR bar you will start twisting and binding the control arms. The answer is a bar that attaches to the axle tubes and pivots off of frame mounts. I like the www.hrpartsnstuff.com bar. Well made, bolts in after you drill two holes in the frame for the top rod ends to bolt up, and works very well. He has customer cars well into the 7's, and Paul is a great guy to talk with. I've helped set up 2 on 8 second cars, but I was the gopher, not the brains . I've also heard good things about the Wolfe bar but you have to weld those mounts into place, and there are now cheaper clones of both styles but I don't know those names.

AirLift Air bags... http://www.airliftcompany.com Add extra air to the right rear bag as required.

UMI or Spohn adjustable rear lower control arm relocation brackets

This anti roll bar for the G body looks good too. Never tried it, yet.
http://www.hrpartsandstuff.com/

Hellwig do a bolt on anti-roll bar that is well priced....I got mine through Amazon.

I use the moroso front springs with old koni single adjustable shocks because I had them.

The rear is where u need to put your effort into....weld in anti-roll bar,
QA1 double adjustable coil overs, 150# springs, and the following from
Trick Chassis: upper control arm relocation buckets, and adjustable tubular
upper and lower control arms. pinion set at -2*

The Trick Chassis parts were very robust and hi-quality it took about a
week of nights out in the shop to do it all but it is night and day difference.

Mid to high 1.3xx sixty foots all day long and you could drive it with your
thumb and two fingers if you wanted to.

The front needs more refinement this coming year with better shocks
and possibly springs but overall I am very pleased with it so far.
Short video below.
https://youtu.be/l-SEGeoJEEg