are the coil springs interchangable on a 70 cutlass superme....
every where i call to order tells me they dont have listings for the back springs but they have the front and if i can find out they will find me some.... so dose anyone know how it works?

 

They aren't interchangeable. I found a bunch of rear springs listed at Rock Auto. They have the brands and part numbers for your parts guys, mine were cheaper with shipping from them than what the parts store wanted. Look under Cutlass, for some reason they don't list the rears for the Supreme but the Rockauto listings are like that sometimes. I can't see how a Cutlass and Cutlass Supreme wouldn't interchange if they're equipped the same mechanically.


http://www.rockauto.com/

 

go to supercarsunlimited.com These guys only do Cutlass and specialize in mechanical parts. They have all the springs, front and rear for your car.

http://www.supercarsunlimited.com/

 

I would definitely either go through Supercars Unlimited or Fusick. Fusick has springs cut to exact specifications. While they're more money than RockAuto, they're also correct for your car.

At Fusick, part number RCS612 Rear Coil Springs $165 pr. You have to call them and tell them about your car--year, engine, body style, transmission, a/c, etc.
(860) 623-1589. Takes about 1-2 weeks for delivery.

 

If you can get an older spring book you can get the specs on the springs listed, then look in the back of the book for springs with close specs.

 

Summit Racing has Moog springs. I went with the 5374 for the front and CC501 cargo coils for like $60 work well in the rear, stock height variable rate spring seams to reduce body roll and help plant the tires on acceleration.