340 w/ 650 double pumper ?

I have had good luck with small carbs on a 340. I ran a 650 double pumper and a Eddy 600. Bolth had great throttle responce and derivable. This was on a low compression 340 with a LD340 intake and a set of headers. My new 340 is a little wilder and is running a 830cfm Proform carb