LS1NOVA

iTrader: (12)

I already have them, so Id like to use them. Patriot Golds seem way overkill for a 550 lift cam.

BigBlockCamaro

iTrader: (6)

Well I dont think its the Lift for the cam, but if your running 15psi, you might want to think about some stiffer dual valvesprings, so you dont pop one!

Paint_It_Black

iTrader: (1)

Lift is one thing, but not what you match a spring to, unless you're beyond the capability of a lesser spring. You want to match your springs to the cam's ramp rate, but I noticed your sig. You're going with a turbo. Will a 918 be able to keep a valve closed without bouncing when you're max boost and WoT? FI applications usually want to run more spring (seat pressure).

LS1NOVA

iTrader: (12)

I was thinking that the LS6 cam was mild enough that the 918 were already oversized?

PREDATOR-Z

Yes, they are fine, just make sure you run hem at 1.8 height and titanium retainers a plus. I run them on my Supercharged C6, 10 psi with .568 lifts XE lobes, no issues for 1 year