2xLS1

iTrader: (25)

I'm looking at buying the MTI cam package that comes with Manley springs. How good are they? I will be going with a .581 lift cam if I get their package. I already have a new set of 918s that I guess I can sell if I get their package. Which spring would be better for a .581 lift? The 918s I have or the Manley's that come with the kit?

LS1 Power Plant

iTrader: (7)

I am. Have a around 8,000 on them. Broke one about 2 weeks ago. Valve was okay, so I put one new spring on. Broke a second one right around a week ago. If this valve is okay, I plan on using either Comp or the new Crane springs.

LittleBoyBlu99

I have been running my manleys since April 2002 and no problems here.