PTS543A4 Pistons,pins,and rings. 8.34 cc. Valve reliefs. 1.98 compression height. 4.35 bore. 1/16,1/16,3/16 ring package. Location is Quincy,Illinois. $425 OBO plus actual shipping.
I have these in my car, 65cc head, 4.380 gasket bore that's. 040 thick, sitting .010 down in the hole, I'm a tick over 12:1 70cc heads would be closer to 11.5:1 0 deck, 58cc, .027 gasket gets 14:1 There are too many variables to say
I run a 73cc chamber and zero deck. With a .041 head gasket it’s around 11.4. I was going to use them in another block where they would be .020 in the hole. That would have been around 10.8
Oh just so you know the part number for these PTS543A4.......not PTS534A4, that's a chevy piston.....lol
I do stuff like that all the time. I cant keep numbers straight and my brain goes faster my fingers can......plus then my phone thinks it knows what I want to say