Not sure how to answere that one. You might want to post it on the engine tech portion of the forum and ask the same question. Sorry I couldn't help....

I am new to this program, but would like to get some answers to a few questions and I thought you could help. Recently I bought a 65 tempest convertible with a 74 455 in it with 6 x heads. it also has an intake on it #8778818 and 3x2 carbs. My problem is I dont think this intake should be on this set up with the heads I have on the block . The gaskets continue to blow out on the intake manifold. If you can help or send me to somewon who can much appreciated .