Houtan
Member
Hi everyone,
I have found very good condition heads casting number 1377979 on 430 engine, on BBB casting numbers : https://www.teambuick.com/forums/view.php?pg=casting_numbers_big_block , says that this casting number is for 400, 430, 455 engines. So please anyone can help me on following questions:
Can I use them on my 1974 455 engine with 455 rocker arms and lifers etc.? I guess I must Block the oil passages on heads.
Can I use standard 455 head gasket for this heads?
Can I use 455 stage 1 valves on this heads?
and at the end what will be my compression ratio with this modifications with 1974 pistons?
I have found very good condition heads casting number 1377979 on 430 engine, on BBB casting numbers : https://www.teambuick.com/forums/view.php?pg=casting_numbers_big_block , says that this casting number is for 400, 430, 455 engines. So please anyone can help me on following questions:
Can I use them on my 1974 455 engine with 455 rocker arms and lifers etc.? I guess I must Block the oil passages on heads.
Can I use standard 455 head gasket for this heads?
Can I use 455 stage 1 valves on this heads?
and at the end what will be my compression ratio with this modifications with 1974 pistons?