You can't swing a cat on this board without a 750 Eddy post.

I think you will see a power gain with a 750 Holley or 800 AVS. Or a 750 Carter.

The small Eddys work good, but 383 will like more carb.

I currently have a 650 Carter on my 383 HP. Not bad, I can tell it is down on power from the 750 Eddy mid range that it replaced. Carter- A much better carb though all around.

I have a 750 DP that I tired last summer as well but it must have a dirt clod in it someplace as it idled well for a few minutes and then quit. I would like to be able to report a back-to-back for the board at some point.

Would really like to swap the DP for a 3310 vac. I had one of those that rocked the house. I do like the Carter style carb for a dailey use car. Wouldn't mind a 800 AVS either.