I got a set of ls6 springs with my hot cam. There are two different versions of the ls6 spring. The yellow and the blue. Mine are blue. Which set is better or heavier duty? what are their specs? Can anyone answer this ?

Jeff

 

I think Blue are good to .550 ish, yellow.580 ish, 90 lb seat pressure for both, but I can't find info right now.

 

10. 01 LS6 springs: max lift .540

O.D:
I.D:
seat pressure: 90 @ 1.800
open pressure 260 @ ?

11. 02 LS6 springs or green: max lift ~.580

O.D
I.D:
seat pressure: 90 @ 1.800
open pressure: 294 @ ?

12. 03+ LS6 springs(orange): max lift ~.580

O.D
I.D:
seat pressure: 90 @ 1.800
open pressure: 294 @ ?

13. Stock Ls1 Springs

O.D:
I.D:
seat pressure: 75 @ 1.800
open pressure: 230 @ ?

 

The blue springs REQUIRE a certain break in. Do not forget this. I had 1 fail in the first 2 hours of runtime, supposedly because I had not broken them in correctly. This was with the hotcam, also. I do not remember what the break in entails. Do a search.
Good luck (if you know of someone in need of 17 ls-6 springs, I got 'em).

 

what about the yellow ones?

 

My 03 Z06 had yellow ones. What lift are they rated to?

 

I also have the yellows.. I believe they are good to .550

 

I'm running the yellows too w/ my ASA cam. According to Lingenfelter, they are good to .580

 

^^correct^^

 

I had yellow springs before we swapped over to PRC Gold Extremes. We checked them on the heads before we took them off to .650" lift before binding. May not be useful info but I was surprised.

 

I've run them on .590 lifts but it also depends on lobe profile (shimmed). Changed them after 12K miles