Daughter needs Gas mileage from 273 commando

67Dart273 said
In my opinion, forget the 650 Holley.

X2.....get a 500 or(max) 600 AFB carb. Not to start "Carb Wars" all over again, but, Carters, when setup properly, do get better mileage than Holleys...and disconnect the secondaries!

My $0.02.....