TA1972

iTrader: (17)

Hi, I just bought a set of brand new 243 heads and the springs that came with the heads are blue striped. Can anyone tell me if these are ls6 springs? And also what the lift are?

SSTYCOON

iTrader: (2)

I'm thinking those are the older 01 Springs, good to 525 lift. The yellow LS6 springs are 02-04 good to 570lift

Long Beach

iTrader: (51)

I have some comp 918's and they come with a blue stripe. But i have heard that the older ls1 springs are blue striped.

LS1>girlfriend

iTrader: (19)

i would call whoever you bought them from and if they dont know or sound like they are even a little unsure i would buy new springs. nothing like breaking a spring and having a piston slam into a valve

PREDATOR-Z

those are 01 LS6 springs: max lift .540
seat pressure: 90 @ 1.800

vettenuts

iTrader: (4)

If the heads are brand new, why would they have 6 year old springs? Something doesn't make sense here.

PREDATOR-Z

Old stock, but if they are true LS6, the benefit is the lightweight valves.

vettenuts

iTrader: (4)

Not if they are 01's, the valves didn't get introduced until 02.

2xLS1

iTrader: (25)

01 LS6 springs were solid blue, not blue stripped.

orangeapeel

iTrader: (18)

So these must be 918's.

PREDATOR-Z

yeap, you're right, but what if they are 02-04 LS6 heads with either 918's or 01 springs??
Hmmm
Perhaps a couple of pics of top side and underside?
If they have orangish/redish valve base then they are LS2.

vettenuts

iTrader: (4)

I guess that's why I am thinking something doesn't seem correct here.

blkbird

iTrader: (28)

Pics are necessary in this case

12secSS

iTrader: (30)

Here is a picture of the valve springs in question, I am thinking early LS6 (2001). They are 2.125 uninstalled height. No other markings what so ever.

mr2guru

iTrader: (16)

Nope... those came from an LS2 243 head. Non-sodium valves, etc...

Those came on complete NIB LS2 heads I've received before. They may be the same spec as '01 LS6 springs though. I don't know. I've got them laying around somewhere (the springs new) I guess I could check them real quick.

GR33N GoblinM6

iTrader: (14)

i thought the 03+ LS6 springs were orange striped and were good to .580?? is this wrong?

vettenuts

iTrader: (4)

I just bought a set of LS6 valve springs new to rebuild my stock 241 heads, they are solid yellow as they came from GM. This were bought about a month ago.

jub jub

That's a beefy looking spring. I'm thinking 918.

98camaroLS1M6

iTrader: (35)

Does comp make a single spring that is blue striped called 931?

12secSS

iTrader: (30)

Never heard of a 931. I know they make the 921 (dual), 913, and 930 springs.

I am going to have a buddy see about checking the spring rate of these springs and compare it with the early LS6 specs and 918 specs. We should be able to find an answer this way.