13:1 Compression Pistons in 340 Small Block

Welcome!
same pistons that were in my first 340 Dart. ran strong on pump premium...in1976. the domes could be cut till flush with the flat part of the piston. unless your block is zero decked or the heads have been cut a bunch, maybe you'll end up at 10 and a half to one. sounds like fun! good luck and enjoy! Bob