Originally Posted by KJ
I'd run CP's or wiseco's instead of SRP. From a quality standpoint I feel they are a much better piston than SRP. Both CP's and wiseco's run a tigheter piston to wall so you will also get less piston slap on cold start.
The SRP's can run a tighter cylinder wall because they are made of 4032 alloy with a higher silicon content. I'm pretty sure Wiseco and CP both use 2618 alloy which has a lower silicon content and higher expansion rate which requires looser tolerances. From a quality standpoint the CP's aren't that much better than the SRP's, the valve reliefs aren't as thick as they could be. The 2618 alloy does make the Wiseco and CP about 15-17% stronger than the SRPs though, but unless you have a really high hp build, it's nothing to worry about.