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.
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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