Magnum Manyfold Manifold
Frank Ohlhorst, Medford, NY, 79 Dodge Magnum 440
The Jury seems to still be out on this one – When installing an aluminum intake on a big block – what is the best way to seal it!
– Some say the factory Valley pan is fine, just add some sealer to the corners – others put sealer around each port also – some glue paper gaskets to valley pan intake holes – and some even trim the valley pan down (removing the intake portion) and use paper gaskets
When ever I ask this question on a forum – a fight breaks out – so I am leaving it to you for the correct answer – What is the best way to Install an Intake on a big block?
Use the stock valley pan with the thin paper gaskets contact-cemented to both sides. Then a small daub of RTV in the corners. No sealer between the paper and the manifold or heads – it must be able to move. Even a thin coat of Vaseline isn’t a bad idea.