[callbald]

Looking for recommendation on a carburetor / CFM and which to choose, Edelbrock or Holley.

The 289 I have is an unknown since it has aftermarket aluminum intake manifold and headers. It has the original cast iron exhaust manifolds. I was told the cam is slightly modified. The original owner has passed away and the family has no engine info other than above.

The headers have only a raw casting number. The engine came with a Edelbrock 1505 carb that was a beat up piece of junk.

Compression is 165-170 across all cylinders. Finally completed leak down testing with all cylinders in the 10-12% range