Inliners International Forums General Discussion Engines curosity is about to kill this cat.

Jalopy45 is right, the 250 was introduced in 1967 and had a separate intake manifold at that point. It wasn't until some time in the middle or late 70's that GM went to the integral intake on the 250, so if you find a cylinder head from an early 250 or 230 or 194, it will work and they all have removable intake manifolds.