Marc45167

Need help finding specs on these heads.....PC3060-0606-0003 tried uploading a photo.

bammax

You need to find the original part # stamping or at least what company they're from if aftermarket. If they're gm you can check the drivers front corner for a 3 digit number and that'll give you the basic info. If they're aftermarket then it gets tricky.

Marc45167

They are pro comp/speed masters

bammax

Been a while since I checked, but I remember procomp being questionable at best. Lots of quality issues and customer service was nonexistent. Maybe you have some of the better heads and got lucky. I don't know if even procomp could tell you though.

Marc45167

Yeah I've read some comments about them and I did have machinist go thru them and fix valve seats just like know what they are so when I take this truck to a tuning guy.

bammax

I'd try to contact procomp/speedmaster directly and see if they can get you any info. Just remember that their flow numbers are questionable so stick with just the basic info like valve size and such.