They work well...for about a year, then they lose their arch.

The Superstock Springs were originally designed for the early 62-65 B-bodies. '63 has the same spring segments and lengths as an A-body.

We've had more consistency and longer life out of Cal-tracs and split mono's.

As for ride, we had the 456/457 3400 lbs. springs. The shock you use makes a big difference in ride quality. My Calvert 9 ways ride like crap on #9 setting but calm down and ride comfortable on the #4 setting but the launch goes away.

Last edited by GY3; 06/29/19 09:03 AM.

'63 Dodge 330
11.19 @ 121 mph
Pump gas, n/a, through the mufflers on street tires with 3.54's. 3,600 lbs.
10.01 @ 133mph with a 250 shot of nitrous an a splash of race gas. 1.36 60 ft. 3,700 lbs.