I raced at KID this weekend to test out the Cal-Trac style rear suspension. The first run it porpoised BADLY! Hooked, unloaded, hooked and unloaded in rapid succession.
I had read about this happening with others that had tried these with the Mopar SS springs in A body Darts so I wasn't surprised. It was VIOLENT though and hurt my neck! LOL!
It seems the cure for this is double adjustable rear shocks and slowing (firming up) the extension. Kinda spendy for double adjustables and I may wait until spring to bite the bullet. We temporarily fixed the issue by clamping the rear spring segments together with a pair of extra clamps I made.
Overall, though, the car runs like clockwork. Expected 11.30's due to the unseasonably warm heat and DA (3500) and that's right where it ran. 11.30 best at 120mph with 1.63 60 ft. times.
The best part was I had to use the 330 as my daily driver for 3 days last week while the Cummins had its A/C fixed. It never missed a beat!
