Re: Rear Suspension Video
 

What causes everything to compress on the right rear and not on the left rear? We took out all preload for this weekend and that still didn't prevent it.

Re: Rear Suspension Video
 

All RWD cars with a solid rear axle, as viewed from the rear, the engine twists clockwise and the rear end twists counter clockwise.
A drag car need to keep the left & right drive tire planted equally. Whether by pre-load on a 3 or 4 link, traction bars, air bags, anti-roll bars or springs and shocks is up to you. But "balanced" L/R adjustments can't work due to the nature of the rear axle twist on launch.

Re: Rear Suspension Video
 

coupla things come to mind here--ya might want to switch springs and or shocks side to side not both at the same time but first say the springs see if it does it then the shocks try the same thing---- have you scaled the car to see how much each corner weighs?? might not weigh the same side to side---looking at the pic of the rearend it appears that the left is planting harder than the left=== but when you look at the 2 pix from the right front it appears that the right is planting more than the left---does the car go straight when it leaves ??

Re: Rear Suspension Video
 

I meant to say the left spring is extended more than the right not planting the tire as hard--FED387

Re: Rear Suspension Video
 

Having the right side squat and the other rise is commonly seen on Chevelles with a factory four link. This is because the instant center is too low.

In your case, raising the front mount of the ladder bar will bring the instant center up and back. After doing this, you may find that shock adjustments are a lot more effective.

Re: Rear Suspension Video
 

Can't thank you guys enough for the input! To answer a previous question, yes we have had the car scaled numerous times but it does not seem to do much other than get the car to leave straight. It's kind of difficult to get equal weights on both tires and the ride heights to be similar side to side. It doesn't help with this squat problem nor improve the weight transfer issue but it looks like everyone agrees that I need to raise the ladder bar to move the IC.

Might be SS/LA soon!! This car is worse than a woman! :confused:

Re: Rear Suspension Video
 

I believe it's been mentioned before but if you've got room (and rules permit), an anti-roll bar would make a nice addition.

Re: Rear Suspension Video
 

Well, you would be a woman if you put an automatic in it!
And all the principal of suspension tune would apply with a more feminine transmission.
Have you ever looked under Kips Mustang? Very interesting ladder bar arrangement.

Re: Rear Suspension Video
 

*Like* ^^^^

Re: Rear Suspension Video
 

You definitely need an Anti Roll bar. This will eliminate the twist and keep one side from doing something different than the other.