gxp-miller-gxp

so i might buy 1.85 comp camp roller rockers , i herd that with the ls6 springs people experience valve float, well my new replacement engine only has a 1,000 miles. so do i need to replace my springs? if so could i get ls6 springs and be fine or would i need to find some dual springs?

LS1 Racing

iTrader: (15)

Yes...The stock springs are only good to .500 lift. With a stock LS4 cam and springs and those rockers, you're going to be well over that. If you get brand new LS6 springs (the second Gen units, not the first Gen), you should be okay with those rockers. Even better still would be a set of PAC 1218 springs, and the best way would be the PAC 1518.

Edit: Dual springs have better valve control and give you extra insurance against dropping a valve.

gxp-miller-gxp

http://sdparts.com/details/pac-racing/pac1218
are this it?
i may get these and use them for a while and upgrade to dual valve springs from comp once i get a diffrent cam and what not later on

DavidGXP

iTrader: (14)

I just broke a pac spring and totalled my engine. I was only doing 35mph and have over 10k miles with 40plus drag races. Everything was set up properly.

DavidGXP

iTrader: (14)

Use dual springs only!