Dim efi

The 66' 273 has the standard intake bolt holes, the 64-65' have a different angle and hole size. The 273 ports are smaller that the 340, and 360 heads. A large port manifold on small ported heads is undesirable, however small manifold on large ported heads will work.

I am doing this as a hobby, so I will use my own ECU and software. I have complete tuning control ability with it. For me it is easier than fixing or re-programming an OEM ECU.