Quote:

Still.. the numbers are disappointing. For a mild built 440 to not even make 400 horses is sad.



We know nothing about the build, so I know that I cannot judge. If the compression is low, and has a 280 cam, I'm surprised that it made 387 hp. The last time I had a set of iron heads rebuilt correctly, ported for a low lift cam and put on a bench it was $1,500. That was 15 years ago. My guess is the OP's heads might not be that good, as most will simply buy Stealths or RPMs and be ahead of the game. And I'm always a little skeptical on a rebuild on a standard bore. 387 hp might be where it should be.