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Holley Performance 0-4778S Double Pumper Carburetor

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Carburetor

Double Pumper Carburetor

Double Pumper Carburetor; Shiny Finish; 4 bbl; 700 cfm; Model 4150; Mech. Secondary; Manual Choke; Gasoline; Dual Fuel Inlet;


SPECIFICATIONS:
  • Barrel: Four
  • Booster Type: Straight
  • Carburetor Type: 4150
  • CFM: 700
  • Choke: Manual
  • Emission: Without EGR
  • Finish: Shiny
  • Flange: Square Bore
  • Fuel Inlet: Dual
  • Fuel Type: Gasoline
  • Material: Zinc
  • Primary Main Jet: 69
  • Primary Power Valve: 6.5
  • Secondary Main Jet: 78
  • Secondary Pump Nozzle Size: 31
  • Secondary Type: Mechanical
  • Supercharged Application: No
  • Throttle Bore: 1.688 in.
  • Type: Automotive
  • Usage: Street/Strip
  • Vacuum Port Quantity: 1 timed (spark); 1 full; 1 PCV
  • WARNING CA Proposition 65: Yes
  • WARNING CA Proposition 65 Message: WARNING: Cancer and Reproductive Harm - www.P65Warning.ca.gov

FEATURES:
  • Shiny Finish For Good Looks
  • Optimized Street/Strip Calibration That Works Out Of The Box
  • Manual Choke For Precise Cold Start Control
  • Mechanical Secondaries For Awesome Tire Turning Performance
  • Dual Accelerator Pumps For Add. Fuel Under Initial Acceleration
  • Dual Feed Fuel Inlets For Constant High Volume Fuel Delivery
  • Lightweight Vehicles w/Auto Trans w/High Stall/Low Gearing
  • 100% Wet Flow Tested By Holley Technicians

The Ultra Double Pumper Carburetors feature all aluminum construction and are equipped with metering blocks and a base plate made from 6061-T6 billet aluminum. Three different anodized color options (Red, Blue, or Black) allow for a personalized look while maintaining the ultra high strength and durability you get from billet. They weigh in at approximately 5 lbs less than a comparable zinc carburetor. The new Ultra Double Pumper Carburetors have an enhanced fuel curve for optimum performance, with many more features such as aluminum construction; anodized billet aluminum metering blocks and base plate; 4 corner idle for precise idle control; mechanical secondaries for great performance; clear fuel level sight plugs for easy, no mess fuel level adjustments; fits Ford automatic transmission kickdown for use on popular fits Ford transmissions; four vacuum ports for all necessary vacuum accessories; and for the first time on a Double Pumper, factory pre-set electric choke for easy, fast cold start-ups. The clean, polished look coupled with Red, Blue, or Black metering blocks and throttle body will certainly set your ride apart whether you are at the show or track. Dont trust your performance to just anyone, Holley is the only Modular carburetor company that has been in business for over 100 years and has powered every NASCAR champion since the 60s.

Holley has been the undisputed leader in fuel systems for over 100 years. Holley carburetors have powered every NASCAR Sprint Cup team and nearly every NHRA Pro-Stock champion for four decades. Now, Holley EFI is dominating the performance world as well as our products for fits GM's LS engine. Holley's products also include performance fuel pumps, intake manifolds & engine dress-up products for street performance, race and marine applications. As a single solution, or partnered with products from other Holley companies - Hooker Headers, Flowtech Exhaust, NOS Nitrous, Weiand, Earl's Performance Plumbing, or Diablosport - Holley products can give you the edge you need over the competition.

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