kst8engineer

iTrader: (6)

I've been searching, but I haven't been able to find an answer. What is the maximum lift that yellow LS6 valvesprings can accomodate safely? I'm getting ready for a cam swap, and the cams I'm considering are in the .547 - 0.581 range.

I think the 02+ LS6 cam had lift specs of .551/.547, so it sounds like the yellow springs should handle 0.547 safely.

What about the 0.581 lift cams -- would the yellow springs be a reasonable choice here, or would I be pushing them too far? Would I need to step up to some Comp 918's?

Thanks

hokie00 TA

iTrader: (4)

.570 max lift. im running a tr224/224 .563/.563-112 and havent had any trouble yet gonna change them out soon for some patriot duals.

CalSpeedPerformance

iTrader: (64)

I believe .570 is about right from checking coil bind and spring pressures.

kst8engineer

iTrader: (6)

Thanks for the quick replies!

NemeSS

iTrader: (127)

i wont run anything with more than .550, but thats just me.

405HP_Z06

iTrader: (11)

Do you know the CB on these springs?

blackLS1m6

iTrader: (14)

I think coil bind is 1.085" on the LS6 springs.

01ssreda4

iTrader: (96)

no ****. the piston smacks the valve if one of these babies break so go with PAC 1218s instead.

CalSpeedPerformance

iTrader: (64)

Ive never seen/heard of a broken ls6 valvespring..so thats my last worry

djsanchez2

iTrader: (14)

Yellow Z06 are .550
Blue stripe Z06 are .580

01ssreda4

iTrader: (96)

pushing it so close to the limit is asking for trouble.

regblkss

I ran the yellow spring's on my 224tr for a year or so untill I got my heads.

BlownChevy

iTrader: (20)

Seen sever break myself.....You have just been lucky.