the chamfer around the piston is in the hole (cannot really get a good measurement becuse of the chamfer) but across the center/top of the piston is at deck or out some. i will try to measure it tonight.
Look like the trws I used in one of my 340s. Mine were even with the deck with the 4 deep valve reliefs and with 63 cc heads I ended up with 9.8:1 static compression. Ran a comp XE284H .507/.510 cam and thing ran very strong and had 150 lbs of cylinder pressure. Was about rite for our crappy gas
