Piston to valve clearance.

comoxian said
These are the pistons. And I think this is the cam.

View attachment 1716406067

View attachment 1716406077

Looks like the parts I used in my example.
Should have plenty of room(.100” plus).

If the cam is installed wrong by a tooth(or more)……all bets are off.

Those pistons(correctly oriented, as in the pic), that cam, Ede heads……..if the intake valve is touching the piston……… the cam is way advanced.