Gen 6 Heads
 

I am helping a buddy of mine go through his HP 500's. I just finished cleaning up the heads. Gasket matching the intakes, cleaning up the chambers, and turning the short radius on the exhaust & intake.

After years of using aftermarket heads, I forgot how bad the GM Gen 6 exhaust port looks. It looks pretty crummy. The intake port looks fairly good. Has anyone done just a head swap with dyno numbers??

I definitely would not spend too much money on these heads.