Below is the difference between SS 3400 lbs. springs and Cal-Tracs with split mono's.
Both worked, up to a point, but two completely different pre-loads on the torsion bars and all twisted up with SS springs.
What rear shocks are you running? Monroe long truck or station wagon shocks on the SS springs. Calvert 9 way on the Cal-Trac setup. You have to firm up extension with the Calverts or it hits too hard and unloads.
'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.
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