Moog CC635 Rear Springs - Third Generation F-Body Message Boards

jonxlh99 · 09-26-2009, 03:47 PM

Ok so this sums up all the talk about which rear springs are correct. All I read is how the car sits to high now after new springs and all this crap back and forth about 5665 vs. cc635 vs. whatever. I have an 89 formula 5.7 TPI WS6. The car had the original springs and shocks/struts. 144,000 miles and still rode decent. Put cc635 springs and monroe shocks in the rear today and it's like a different car! Rides great. Got KYB's for the front and doin that tomorrow. The rear ride height is maybe an eighth to a quarter inch at max higher. I can hardly even notice and I have been looking at the car for 20 years! Wanna do the front springs to but a real pain in the *** so gonna just put the struts in and call it a day. Moral of the story is if you have a formula/iroc the cc635 rears work perfect.

This ad is not displayed to registered members.
Register your free account today and become a member on ThirdGen!

punkdude908 · 09-26-2009, 04:32 PM

i have the same rear springs in my Bird. i noticed a huge difference too. even better after i added a 24mm rear sway bar and poly bushings. they were pretty cheap too...around $50 if i remember correctly. the car has a nice stance being that i used the 4th gen rear spring isolators.

allenfre · 10-12-2009, 09:36 PM

Quote:

Originally Posted by jonxlh99

Ok so this sums up all the talk about which rear springs are correct. All I read is how the car sits to high now after new springs and all this crap back and forth about 5665 vs. cc635 vs. whatever. I have an 89 formula 5.7 TPI WS6. The car had the moog coil springs and shocks/struts. 144,000 miles and still rode decent. Put cc635 springs and monroe shocks in the rear today and it's like a different car! Rides great. Got KYB's for the front and doin that tomorrow. The rear ride height is maybe an eighth to a quarter inch at max higher. I can hardly even notice and I have been looking at the car for 20 years! Wanna do the front springs to but a real pain in the *** so gonna just put the struts in and call it a day. Moral of the story is if you have a formula/iroc the cc635 rears work perfect.

Can you please tell me this formula? I wanna learn something before diving into another garage project thanks.

RED_DRAGON_85 · 10-12-2009, 09:47 PM

its a firebird formula he is talking about

cprmn14 · 10-13-2009, 01:18 PM

i know man. I have a 91 rs and i just put Moog springs in the back, and KYBs all around. Definatly rides like a new car.