65 273 Intake manifold

Hello from across the river!

Tell us more about what is going on with your engine. i.e. your building it now, its in the car, its completely stock, its a swapped 360, etc. Anything to help us guide you better.

What the Professor states is true. So if your engine is the original as far as you know then you need to verify if you have 1965 and down heads.