Just trying to help here. You have $$$ tied up in new engine parts.
Why waste it on an unknown carburetor in unknown condition.
Your baseline is to start from a decently running engine.
Then you can test jets, intakes and other carburetors for improvement.
If you start off wrong, you'll be like a dog chasing his tail.


"Adding CFM to a truck will only help at engine speeds you don't want to use."
"I found there was nothing to gain beyond 400 CFM."