I never recommend or use VS carbs on anything so not much help here............Muscle car = DP in my world and get just fine mileage and power w/out relying on a vacuum source for sec. actuation....... beer


72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....