Six Pack question

You can improve fuel mileage with a six pack over your current setup if you are driving very modestly. But if you're getting into the outboard carburetors all bets are off and fuel mileage will drop! LOL. Outboard carburetors are involved in the idle circuit. The carburetor seal nicely when they're in good working order, old carburetors and carburetors that have been over tightened to the manifold can warp causing problems but it usually shows up in the form of sticky butterflies and vacuum leaks but I've never experienced a problem myself. I ran a fairly large hydraulic camshaft causing me the need to increase primary jetting in the center carb which did decrease fuel mileage.