denscor

Anyone every tried Livernois Motorsports LS-Series Dual Valve Spring Kit?I need new springs and can't decide on this or PAC 1521.

1lejohn

iTrader: (9)

No haven't used those springs. Call them and ask who makes the springs for them. I have the Pacs now. I've used the Manley and GM springs in the past

Gray86hatch

iTrader: (83)

depends on your cam and what it needs. The Lunati kit springs seem to be a good dual spring

Tim

JustAnotherLS2

I hear good AND bad experiences with literally EVERY spring. Theres no way around it. There is no end all be all spring. To me, its like playing russian roullete with dropping valves.

denscor

I have a .660 lift cam and it floats at high RPM plus I run 16 psi of boost.So I need something stronger. I have heard that you need a stronger spring when you run boost.Springs in it now are only up to .650 so its on the edge.

TurboBuick6

iTrader: (2)

If your cam is a .660 lift and the springs are only good to .650 you are probably running into coil bind. Get some PAC 1521's and call it good.

Yes when you are running boost you do need a stronger spring. You now have 16 lbs of force fighting against the intake valves.

1lejohn

iTrader: (9)

Pacs seem to be the best. They may cost more but dropping a valve equals $$$.