Better Performance Output

Sounds VERY similar to the 340 in my 69 Barracuda. A 750 Edelbrock worked fine for me. Lots of power. I did re-jet the primaries down two steps though. It was running rich while cruising around the streets, but that took care of it, and I noticed no difference when I stomped on it.
Ordered my Holly 750 ultra double pumper...we'll see how efficient it is while I experiment in tinkering with my 650....learning how to clean it out and shelving it for a later time to use. Maybe I'll get it tuned at a later date with the car again. Thanks for all your input and suggestions. Might anyone know where I might find a cold air intake for this car rather than sucking the hot engine compartment air? The hood clearance between the carburetor and the inside of the hood is minimal....