1972 Dodge Dart Swinger Stance

Ddaddy said
I never said anything about how they look, just the stance they give and how they perform. The 3000 lb SS springs are nearly identical to the HD springs that came on my '69 GTS. The extra leaf on the one side is an advantage when running a performance set up to provide the best overall performance balanced between launch traction and cornering...even if it's all on the street. The extra 20 lbs/in spring rate isn't enough to matter for normal street driving when the front end is tight and adjusted to the correct ride height. HP gas shocks help too.

My GTS was sagging an inch lower on the rear passenger side than the driver's side after 46 years of pressure from just the stock 340 drive train. Now with a Mopar performance Magnum 360 crate motor putting out 390 HP and 422 lb-ft torque, a 2500 rpm stall torque converter and 3.91 sure-grip rear...I want the extra leaf on the passenger side.

No sir. The extra 20 lb/in rate is a 16% increase in spring rate compared to a 120 lb/in spring. 16%. If you compare to the XHD's I recommended it's a 27% increase. That is not a small difference, it and absolutely is more than enough to matter even for normal street driving. I run front torsion bars that are 300 lb/in, a front sway bar, and everything in the front end is brand new polyurethane or better. And 140 lb/in springs in the back are still TOO STIFF to have a balanced car with my setup. I run my rear sway bar at the minimum setting already with 120 lb/in springs. I also run 295's out back with modern compound tires, so, if anyone needs stiffer springs out back its me. And I don't. Not even with a 400+ hp 340.

As far as a performance set up, yes, SS springs are. For the strip. Period. They are designed for launch traction, and launch traction alone. If you run unbalanced springs you are not running a set up that is compatible with performance cornering unless all your corners are left turns. Everything you pointed to for suspension set up is for a strip car. Not a street car, and certainly NOT a car set up for corners.