Stock Replacment Springs Question - Third Generation F-Body Message Boards

Imadude_134 · 06-20-2006, 11:37 PM

I need new springs on my 91RS. I Dont want drop springs (cuz i have BIG tires in the back [275/50r17]). I went to autozone, and they had 2 options for the rear springs, pn RCS5665S for the "duralast regular" and pn RCS635V for the "Duralast Variable Rate". My question is, what is the difference? And which one is stiffer (so I will finally stop dragging my rear tires). I would like to get iroc or z28 springs (cuz i dont mind the firm ride, i didnt buy a camaro for a comforatble ride) but was wondering if there would be any fitment issues to put them in my rs. The full set from autozone will run me about 120$. Any1 know where I could get z28/iroc springs, and what they cost, cuz autozone had the same pn's for the rs and the z28 springs front and back. Thanks in advance for any and all help.

-Tim-

Mkos1980 · 06-20-2006, 11:48 PM

Variable rate is the rear. the regulars are in the front. Duralast springs are made by Moog.

sully91rs · 06-22-2006, 09:33 PM

MOOG Parts Lookup website

MOOG
Rear Coil Springs
RS
COUPE &
CONVERTIBLE w/5.0L 5665

Rear Variable Rate Springs
RS CC635

I just looked that up on Moog. I think the 5665 is linear rate, and the CC635 is variable. Also, the variable rate will have a higher ride height than the 5665.