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Home  /   Air & Fuel Delivery  /  Carburetors  /  4-bbl. Dual Pump Carburetors  /  Universal Dual Pump Carburetors

Holley Double Pump Carburetor, 850 cfm, Manual Choke

Holley Double Pump Carburetor, 850 cfm, Manual Choke

Item Number: HLY0-4781C
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Unit Price: $838.95
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Will be shipped via: ITEM SHIPS DIRECT FROM MANUFACTURER
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 Detailed Description
Holley Double Pump Carburetor
The best known carb for all racing. Features dual accelerator pumps, mechanical secondaries, dual metering blocks, center hung floats, dual feed fuel inlets, manual choke, power valve blowout protection and a classic dichromate finish. 100% wet flow tested and calibrated.

Part Type: Carburetor
Model: 4150-Series
Application: Street/Race
Fuel Type: Gasoline
Number of Barrels: 4
CFM: 850
Choke Type: Manual
Fuel Inlet: Dual
Fuel Inlet Fitting Size: 7/8"-20 to 5/8"-18 Inverted Flare
Secondary Type: Mechanical Secondary
Throttle Linkage Type: Universal
Ford Auto Trans Kickdown: No
Main Body: Zinc
Booster Type: Down-Leg
Screw-In Air Bleeds: No
Metering: 2 Circuit
Idle Circuit: 4 Corner
Primary Venturii Diameter: 1.5625"
Secondary Venturii Diameter: 1.5625"
Throttle Plate: Steel
Throttle Plate Pattern: 5.16" x 5.62"
Primary Throttle Bore Diameter: 1.750"
Secondary Throttle Bore Diameter: 1.750"
Primary Metering Block: Cast Aluminum
Secondary Metering Block: Cast Aluminum
Primary Fuel Bowl: Center Hung Float, Dichromate
Secondary Fuel Bowl: Center Hung Float, Dichromate
Externally Adjustable Floats: Yes
Fuel Bowl Sight Windows: No
Primary Accelerator Pump: 30cc
Secondary Accelerator Pump: 50cc
Primary Main Jets: 80
Secondary Main Jets: 78
Jet Extensions: No
Quick Change Jet Ports: No
Primary Power Valve: 6.5
Secondary Power Valve: 6.5
Power Valve Channel Restrictions (PVCR): No
Primary Pump Nozzle Size: .031"
Secondary Pump Nozzle Size: .031”
Secondary Spring Color: NA
Finish: Dichromate
Vacuum Port - Timed (Spark): 1
Vacuum Port - Full Vacuum: 1
PCV Port: 1
Manufacturer: Holley
Manufacturer's Part Number: 0-4781C
Weight: 13.0 lbs.
Warranty: Holley Performance Products warrants its new performance products to be free from defects in material and workmanship for a period of 90 days from date of purchase. Holleys Limited Warranty specifically does not apply to products which have been (a) modified or altered in any way; (b) subjected to adverse conditions such as misuse, neglect, accident, improper installation or adjustment, dirt or other contaminants, water, corrosion or faulty repair; or (c) used in other than those applications recommended by Holley Performance Products. Holley also does not warrant, and disclaims all liability for products used in racing activities and/or applications other than those specifically recommended in the current Holley catalog. This Limited Warranty is extended to the original consumer only. This Limited Warranty is not assignable or otherwise transferable. There are no warranties which extend beyond those stated herein. Holley offers no other warranties, express or implied beyond this Limited Warranty. In the event of an alleged defect in material or workmanship, Holley's responsibility is strictly limited to repair or replace the defective product. Holley has no other obligation express or implied. Final warranty determination will be in the sole discretion of Holley. Holley shall not be responsible for (a) actual or alleged labor, transportation or other incidental charges; or (b) actual or alleged consequential or other damages incurred by use of product of Holley Performance Products.
Quantity: Sold as Each




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