supersix

iTrader: (12)

I need to know which valve springs are the best and strongest on the market. The lift on the cam is over .620 on both sides. This is for a stock LS1 head with stock valves. I also need to know what shims, seats, and retainers to use. I am thinking titanium retainers....but don't know if they are required or what to go with....I also need to know where to get all of these parts. thanks in advance.
Brett

777

iTrader: (21)

Not necassarily the best or the strongest, but all that you should need. The PRC duals which come with hardened seats, ti retainers, springs rated for .660 lift, valve seals, they are around $250

TAQuickness

iTrader: (28)

supersix - you should read the cam guide sticky. towards the bottom is a lot of information about setting up a valve train to support your cam.

PREDATOR-Z

There is PRC "platinum" duals for .670 lifts
PRC gold for .660 lifts
Patriot gold for .650 lifts

777

iTrader: (21)

I thought platinum was for .660 lift...?

PREDATOR-Z

https://ls1tech.com/forums/showthrea...light=platinum

PRC gold at .660, I edited my post