Hello Ron,
Thanks for the interest in our stuff. FYI, ALL of our pistons are forged and they have been since our inception 35 years ago. We make our own forging dies, and all our blanks are forged for us exclusively and shipped here where they are machined in-house.
I'm not quite sure what you mean by powerforged, all forgings are formed under 100's of tons of pressure to promote material density and thermal stability. To me, the term "powerforged" is an old TRW term they used to market an entire line of pistons for the last 25 to 30 years. We have never made a cast piston here at Diamond, and I don't think we're going to start anytime soon.
Let me know if I can send you the spreadsheets outlining what we're now offering and if I can help you in the future.
Thanks!!!
Eric
