Holley 0-80573S Supercharger Double Pumper Carburetor Draw-Thru 750 CFM 4150 Mechanical Secondaries Shiny Gasoline

A four-barrel carburetor engineered for supercharged engine applications, the Holley 0-80573S Double Pumper features a boost-referenced power valve that monitors intake manifold vacuum below the supercharger for proper fuel enrichment under acceleration. Fits 586 Oldsmobile, Cadillac, Allard, Buick and 45 other makes vehicles from 1952 to 1996, including the 1993-1996 Chevrolet GP3500 and the 1992-1995 Bentley Continental. Full vehicle list below. The 750 CFM carburetor displays a tumble polished shiny finish and incorporates dual accelerator pumps with dual feed fuel inlets for constant high-volume fuel delivery. Mechanical secondaries combined with a manual choke provide precise cold start control, and the 4 corner idle system permits independent adjustment. With a 1.688 inch throttle bore, the carburetor is compatible with GM, Chrysler, and Ford automatic transmission kickdown linkage. No spacer is included with this carburetor.

• Throttle Bore: 1.688 inch
• Air Cleaner Flange Diameter: 5-1/8
• Color: Polished Aluminum
• Float Level: Externally Adjustable
• Fuel Inlet Center To Center: 9.5
• Fuel Inlet Type: 5/8-18 Inverted flare
• Meter Block Material: Cast Aluminum
• Primary Float Type: Center Hung Nitrophyl
• Primary Venturii Diameter: 1.375
• Secondary Float Type: Center Hung Nitrophyl
• Throttle Kickdown Provision(S): Compatible with GM, Chrysler, and Ford A/T kickdown linkage
• Vacuum Ports: 1 timed (spark) port, 1 full, and 1 PCV port
• CFM: 750
• Barrel Quantity: 4
• Material: Aluminum
• Finish: Shiny
• Choke Type: Manual
• Secondaries: Mechanical
• Flange Type: Square/4150
• Fuel Inlet: Dual
• Model: 4150
• Supercharged Application: Yes
• System Type: Draw Thru
• Spacer Included: No
• Booster: Downleg
• Booster Design: Downleg
• Condition: New
• Cubic Feet Per Minute Rating: 750.0
• Fuel Type: Gasoline
• Grade Type: Performance
• Linkage Attached: Yes
• Marine Approved: No
• Marine Use: No
• Mounting Hole Quantity: 4.0
• Primary Jet Diameter: 74.0
• Primary Main Jet: 74.0
• Primary Power Valve: 10.5
• Primary Pump Nozzle Size: 28.0
• Secondary Main Jet: 84.0
• Secondary Pump Nozzle Size: 31.0