rpm-inc

iTrader: (2)

I got a cam and spring kit from speed inc years ago that I am finally installing.

TU1.5 cam
Duration @.050 is 228/228, Lift is .571/.571, and is on a 112LSA.

Came with these springs.
PRC .675 lift duals
Install Height: 1.800"
Closed Spring Pressure: 157lbs @ 1.800"
Open Spring Pressure: 471lbs @ 1.125"
Maximum Spring Lift: .675"
Coil Bind 1.060"
Spring Rate: 483lbs/in

Are these springs a little much for this cam? Or just run em? Stock rockers and new LS7 lifters. Thanks.

Mavn

iTrader: (3)

I'd sell those and rock some PAC .600 beehives man . Make some money off the big springs. The singles will work great

rpm-inc

iTrader: (2)

Thanks! What about with a bunch of boost? 20 psi? I do have a set of pac 1218's if those are what you are referring to?

Mavn

iTrader: (3)

Pac 1218's held 25# with a similar cam on my 4.8. SEND IT!