AYOUSTIN
Greenie N00B Member
Eibach Race Springs line, right? I've always heard such great stuff about Swifts, and I ran their Spec Rs before going to the Ground Control setup. I was very happy with them. In terms of conventional performance springs (not coilover springs), I still think they're tops.
But I was talking to a well-known/extremely reputable setup/racing/tracking/track support shop (at the tracks every weekend) about maybe swapping out the Eibach Race Springs on my GC's with the Swifts coilover versions one day if I ever changed spring rates. They adamantly insistent it would be a BAD thing to do. In their practical experience (which is extensive - hundreds of cars), the first time Swifts get full compression/coil bind, they're never the same again (in a bad way). They recommend Eibach Race Springs and Hypercos to all of their customers, never Swifts.
They are Eibach pullbar springs commonly used on older muscle cars. Swift doesn't make anything that fits in the rear, but I've seen plenty of people run Swift stuff without issue. If you're hitting coil bind on a street driven car you're doing something wrong. You should always hit your bump stops, or worst case scenario, your frame stops before the coils bind.
I was looking at Hypercos but after seeing Clint's test results of his 800lb/in springs I decided against it. I'm absolutely loving the Eibachs so far.