Automotive Parts and Accessories: Holley 0-4781C Model 4150 Double Pumper 850 CFM Square Bore 4-Barrel Mechanical Secondary Manual Choke New Carburetor - Holley

Automotive Parts and Accessories: Holley 0-4781S Model 4150 Double Pumper 850 CFM Square Bore 4-Barrel Mechanical Secondary Manual Choke New Carburetor - Holley

Automotive Parts and Accessories: AED 4150 Ultimate Holley Double Pumper Carburetor Kit - AED

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850 Holley Double Pumper Carburetor Popular Q&A

Q: How to Tune a 750 Double Pumper Holley Carburetor.
A: 1. Remove the air cleaner. Start the engine and allow it to warm up to operating temperature. Shut the engine off. Remove the passenger side fuel sight plugs on... Read More »

Q: Why use a holley double pumper verses a regular carburetor?
A: The holley has more cfm`s cubic feet per minute than a regular carb.and it also puts double the fuel into the intake faster than a regular carb. Read More »

Q: How do you tell whether a Holley carburetor is a double pumper or...
A: Only the street carburetors from Holley Perform... Read More »

Q: How many mpg's does a holley 650 double pumper carburetor get?
A: If you had the Original qudra-puke carb on it or the rochester you should get two ore three MPG more out of it as long as you keep your foot out of it. You shou... Read More »

Q: How to Tune a Holley Double Pumper.
A: 1. Check the clearance between the pump diaphragm arm and the adjustment screw assembly found on the forward mounted fuel bowl. Ensure the arm is slightly touch... Read More »