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In the videos it looks like the rear of the car is bouncing up and down some, I removed the 170# springs from the coilovers earlier this year and tried 130# springs friday for the 1st time. I'll take the 170's with me next time out to track test.



Hopefully I'm not leading you down the wrong path Bob, BUT, You should only ever have enuff spring at the rear, to hold the rear of the car up. If the rear is bouncing around on a pass, the shocks dampening need to be adjusted to control that, not stiffer springs. And, the shock should be in the middle of it's travel at ride height.

Do you have adjustable shocks??




Steff, I didn't realize that. I know it made a difference on my DartSport when we went from 130# springs to 110's so when I saw this car had 170's from the nitrous days I put 130's on it. I'll see how it does next weekend, if it still has problems I'll throw the 170's on to test.

The rear coilovers are Chassis Engineering single adjustables, they were rebuilt a couple months ago but the adjusters don't work, full soft and full hard feel the same by bouncing the car and don't make a difference on the track.

I need new slicks and new rear coilovers, just don't have the coin right now.


Thanks Rob, hope to race with you this year.

1970 Challenger, all aluminum 528 Hemi, HDK suspension, Tremec 5 speed manual