Bigger Carb on my 340

I have a 600 and 750 Ede. I have run both of them on my warmed over 360.
The only advantage I have found that the 750 has over the 600 is in the very top end.
I pretty much drive my cars street light to street light,so top end is never met.
All around performanceI give the edge to the 600. The car is quick,and just runs well with it. I just bought a 650 from a member,so I will be toying with it to see how it runs.
I would think a carb in the 650 range would be ideal.

With that 4spd you can take advantage of a Holley DP as well.