i already have a comp 226.585 111 lsa and thinking about buying these heads.
just want some feedback on people running the GM cnc'd ls6 heads without a GM cam(ASA, grand am, hotcam). i know these heads work better in conjunction with GM cams, but i just want to see some numbers or hear opinions of people running an aftermarket cam with these heads.

thanks.

 

We made 443rwhp with a set of these and an FMS 226/226 cam. They flow damn good esp considering they are stock valved.....

 

Anyone have flow charts for them?

 

I have seen some good numbers from those runing these heads.
I have no memory of what cams they were using though.
443 by cammin is the highest I have seen.

 

443 sounds really good, anybody else have numbers to show???