remytherat Well-Known Member Joined Jun 1, 2023 Messages 469 Reaction score 512 Location Los Angeles Sep 1, 2024 #1 Finishing up my 5.9 swap. Going to use 318 manifolds original to my car. Should I use a header gasket? I hate them but I'm wondering if I might need them since these manifolds aren't designed for use with magnum heads.
Finishing up my 5.9 swap. Going to use 318 manifolds original to my car. Should I use a header gasket? I hate them but I'm wondering if I might need them since these manifolds aren't designed for use with magnum heads.