Which Edelbrock shock?

I am using the red ones with the same springs on my 65 fastback. I also have global west suspension. Get a set of roller perches and you will lose your mind at the difference from your stock suspension. I also have shelby quick steer.

The Performer IAS (red) shock is a stiffer shock then the Classic IAS (grey). I have the Performers on my car and am very pleased with them. They are very firm, but will allow the suspension to respond if they encounter a change in the pavement.

For your set up with the progressive springs, you might want to try the Classics. They should work great with your combo.

Tim

I am going to be the odd man out, sorry.

I have had bad experiences with the ED's. Once on my Ford 4x4 truck which rode harsh and transmitted the bumps into the cabin. I purchased Bilsteins and it was a world of a difference, much better than stock and stock was much better than the ED's. I also have them on my 71 Mustang and I am taking them off. Not enough proper damping, they are either too harsh or too jouncy.

I am putting in QA1's since Bilstein nor Koni does not make shocks for the 71 stang front end. My 65 had them, now has much better Koni shocks. The QA1's are pretty good but not as good as Bilsteins or Koni. I will no longer try the ED shocks. They are better than stock cheap shocks or KYB's, but when you purchase a shock a bit more expensive, you will be happy you did, just my opinion on the experiences I've had with them.

http://www.chevelles.com/forums/showthread.php?t=120538

I'd recommend the Koni shocks as well if you're looking for adjustability. Besides, they are not that much more than Edlebrock shocks anyways.