Carburetor Choice for my Dart

Anything between 600 & 750 would be just fine. The difference is;

The smaller carb will have a slightly better throttle response BUT may not produce the same power on the same amount of pedal travel vs the 750.

The 750 will have a greater top end amount of HP power vs the smaller carb but only a few HP. Will you feel it? Probably. Will it seem like a lot? Possibly. The HP difference on a dyno maybe only 10 HP at this build level. But it will also show throughout the curve as a slight gain.

For a street cruiser, the AVS (II or not) is a hard carb to beat for it’s manors & jet it/set it/forget it operation. My older 600 Edelbrock AVS is an excellent street driving carb. Just spray the air bleeds at the boosters base once a n a while to keep it good.

On Holley’s, I do love me a double pumped on my manual trans rides. At WOT, they hit really nice.