Sealed Power 411NP30: Cast Pistons Pontiac 400 4.150" Bore
GM Pistons
Cast Pistons Pontiac 400 4.150" Bore Flat Top Ring Groves: 5/64", 5/64", 3/16" Set of 8
GM Pistons
Cast Pistons Pontiac 400 4.150" Bore Flat Top Ring Groves: 5/64", 5/64", 3/16" Set of 8