Mike or Cliff or …,
For the closed chamber heads that Mike listed in post #202, are there any differences in those heads, other than hardened seats, e.g., are they different for domed pistons vs flat top pistons?
Richard
302 are 64 cc chamber while the 920 is bigger I believe, like 66 or 67 cc.
302 are induction hardened exh seat but that's not reliable after they cut through the hard surface during the valve job.
I have heads if you need some and can provide them in a few forms, cores, ready to run, and or ported ready to run.
They flow around 175cfm by .500 'stock'
After porting they flow 200cfm by .500 lift. Stock valves still.