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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
Slight differences I am sure but not enough to make much performance difference. The size and shape of the closed chamber makes the heads work. The ports and runners are all small and probably very similar between heads. I would have to look but I believe all the valves are the same size between heads.