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Holley 134-300S - Holley HP Main Body

Holley 134-300S - Holley HP Main Body
Holley 134-300S - Holley HP Main Body

JEGS Part Number: 510-134-300S

HP Main Body
  • Shiny Zinc Finish

    Holley 134-300S Details

    HP Main Body Kits

  • Reduces Turbulence And Smoothes Air Entry
  • Pre-Calibrated At The Factory For Optimum Perf.
  • Simple Installation With Common Hand Tools
  • All Necessary Parts Are Included
  • Eligible For Holley Contingency Programs

  • Holley HP Main Body

    You asked for it and Holley delivers!

    The famous Holley HP main body found in every pre-2012 NASCAR Cup winner is now available in a retrofit kit to update your Holley Double Pumper. Holley has taken the science of fuel technology and introduced a retrofit package that converts your tired 0-4777 (650cfm), 0-4778 (700cfm) or 0-4779 (750cfm) (shiny or dichromate) into a race ready, high flow 750 CFM HP style carburetor with simple hand tools.

    Detailed instruction sheets with photos and all parts necessary for the conversion are included for simple installations, even by novice enthusiasts. A few minutes are all it takes to eliminate that restrictive choke tower and linkage and give your engine the airflow and horsepower it has been looking for.

    Don't settle for a cheap overseas knock-off, demand what the racers demand. Demand Genuine Holley!

    Features and Benefits:
  • Eliminates choke tower and associated hardware of standard Holley Double Pumper for increased horsepower, torque and airflow.
  • Reduces turbulence and smoothes air entry into the venturi
  • Pre-calibrated at the factory for optimum performance and drivability on a wide variety of applications
  • Simple installation with common hand tools can be accomplished quickly because all necessary parts are included:
    - Assembled Main Body with Screw in Air Bleeds, Down-Leg Boosters, Accelerator Pump Shooters and Vent Tubes
    - Carb to Baseplate Gasket
    - Metering Block Gaskets (2)
    - Float Bowl Gaskets (2)
    - Bowl Screw Gaskets (8)
    - Main Jets to properly calibrate carb for Street / Strip / Racing action
    - Detailed Instructions
  • Available in Shiny Finish (134-300S) or Dichromate (134-300C) to match your existing carburetor
  • Eligible for Holley Carburetor Contingency Programs
  • Adjustable Screw in Air Bleeds
  • Affordable alternative to HP series carbs for entry level racers

  • Holley 134-300S

    Accelerator Pump Discharge Nozzle Included
    Air Bleed Material
    Air Bleeds Included
    Booster Type
    Fuel Bowl Gaskets Included
    Fuel Bowl Screw Gaskets Included
    Jet Material
    Jet Sizes Included
    Jets Included
    Main Body Finish
    Main Body Gasket Included
    Main Body Material
    Cast zinc
    Metering Block Gaskets Included
    Metering Plate Gaskets Included
    Primary Discharge Nozzle Size (in.)
    Primary Inner Air Bleed Sizes Included
    Primary Outer Air Bleed Sizes Included
    Sold individually
    Secondary Discharge Nozzle Size (in.)
    Secondary Inner Air Bleed Sizes Included
    Secondary Outer Air Bleed Sizes Included
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