I used to have the 3400 lb SS springs on my cuda that was 3700 lbs at the time. It hooked good, but the Cal-Tracs were way more consistent.
This was running 11.40s on motor w/ a 1.60 sixty foot and 10.60s on nitrous w/ a 1.50 sixty foot. Left front tire would be a foot in the air and the right front barely touching the ground. The Cal-Tracs evened it out.


CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax