i'm swapping out 2-650's for 2-750's on my 440'' small block.

do you guys think this is a good swap or not?

Only time will tell How well tuned are the current carbs.? How big is your small block and what is the intended use of the motor now? If it is the car and motor on your signature I would do it to find out In fact I would be looking for bigger carbs (850,1050) than those two sizes you are dealing with now I like HP and torquepower, more air and fuel normally make Mopower

440 cubic inch small block that's race only. the 650's are tuned well.

Are the 650s vac secondaries.. and the 750s a mech
secondary .. you should like the new carbs

Agreed and I wouldn`t put a vs on ANYTHING and remove em when I can w/excellent results.......

It probably depends on how good your heads are. With 440 cubes, I am betting you have some great heads, and can use the bigger carbs, maybe bigger yet depending on airflow and rpm.

the 650's are DP's.

My 383 loved the 750's on it, bigger motor, bigger carbs!