gsr with pr3 pistons whp?

[bigasian]

Im planning on putting pr3 pistons, skunk 2 pro 2 cams, skunk 2 springs and retainers, an aebs intake manifold, and a rmf header in my gsr. I am going to run the stock gsr head unported until i can afford a ported head. With the unported head what kind of whp can i expect to make? And would the pro 1 cams be a better choice?

[99SI]

With that build pro1's would be much better. The pro2's would probably lose power in that build. The pro1's are basically a continuation and evolution of previous skunk cams so think of them as a stage 5. With that build you would probably be in the 190 whp ball park. plus or minus depending on tune and a few other miscellaneous things. What do you plan to tune with?

[Vteckidd]

PRO1s would be better for that setup. i wouldnt do PRO2s, you can do 1s an drop them in an see good power, 2s you need to have them professionally installed an degreed

[bigasian]

thanks for the info, it will be tuned using chrome.