I'm going to be using some PP golds. I know they say they are good to .660 lift and all but I'm worried about how they're going to work with my cam I'm going to be running. The cam is a 239/246 .649 .614 110+2. Are the springs going to be up to the task? Am I going to need to shim the springs to up the seat pressure? Obviously .649 lift is pretty crazy, but I'm looking to make some killer numbers too and want to do it as safely as possible.
Any feedback would be great!

 

Those springs will be just fine
I am in the market for a cam and I was looking at Texas-Speed's Torquer v2. 232/234 112 .595/.598 and even the Comp 918's which are rated at .600, would work fine. In your case those springs are rated at .660 and your running .649/.614.. Those springs should be fine, because you have about .011 lift to play with.. .660-.649..

 

TSP told me that there springs are good for .660 lift and the cam that im useing is a Crane .650/.650-250/266-112 and they said thay will work just fine with that size lift.

 

My MS4 is on prc springs shimmed to 0.050" of coil bind

 

Remember valvetrain deflection, and if you are using a hydraulic setup you are going to lose a little lift. You should be fine.

 

I've been running them for over 10k miles w/ a .653" lift cam.

 

From what I have seen so far so good. Many thought the 921's would be needed, but so far the dual golds have been doing a great job on LSK lobes.

 

Should I shim the springs .030 ? Or will they be fine as-is?
Thanks for all the reponses everyone! You're putting my mind at ease.

 

I'm using their springs on my 402, .629/.629 lift cam, no problems yet

 

Thanks Scott Did you shim them any?

 

No shimming, they were installed by TSP on my AFR's when I exchanged the Darts out. I had them on the Darts too, worked fine.

 

The golds are absolutely awesome springs....You should be fine.

 

Thanks man, I appreciate it! Thanks to everyone who has chimed in, you guys really help put my mind at ease.