LOOKS TO ME AS IF YOUR PASSING WATER, LOOKS LIKE RUST ON TOP OF PISTONS 123&5. I,D DO SOME MAGNIFLUXING BEFORE REASEMBLE IF IT WAS ME. AND THAT URNNED PISTON IS JUNK. INSTALL SOME FLAT TOP 307 SBC PISTONS. ALSO BET THAT CYLINDER WITH A BURNNED PISTON NEED BOREING/ A SLEEVE. BET YOU HAD LOW WATER BECAUSE OF A CRACK AND THIS CAUSED SIEZED PISTON. JMO
BOB


I BELIEVE IN " JOHN 3:16 "