[Charon]

This is why I don't advocate the holley 500. The stromberg is a much better carb up to 300cfm. Carbking. The national expert on carbs. Has all the efficiency data. All things being equal. Condition. Tune. Engine condition. The stromberg beats any carb up to 3500 rpm. Hands down. The gm tbi. With a 4.3 computer. And the injectors from a 5.0 litre. Using a stock 92-94 harness that has been stripped down. Using a 4.3 dizzy grafted to a v6 base. Works very well.