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Upgrade your street or strip Holley Double Pumper to full HP specification with this 650/ 700/ 750 CFM aluminium main body retrofit kit featuring dropleg boosters. Designed to fit 0-4777, 0-4778, 0-4779C, 0-4779S, 0-4779SA, and 0-76751 models, this kit delivers more torque, horsepower, and smoother airflow by removing the choke tower and air horn. Installation is straightforward using basic tools, and the pre-calibrated setup ensures instant gains in drivability and throttle response.
Holley 750 CFM HP Main Body is a great upgrade from standard flow main body. This main body will work in place of any 650-800 CFM mechanical secondary carburetor. It comes with .160 Step boosters which help with flow and throttle response. The main body will come as pictured with high flow nozzle screws and #35 pump nozzles. The air bleeds are #73 for the Idle air and #31 for the high speed. Both Nozzles and Air Bleeds are available to purchase for tuning.
#73 Idle Air Bleed
#31 High Speed Air Bleed
#35 Pump nozzles
We ship Australia-wide via Australia Post, with tracked shipping starting from $10.95. Orders are usually dispatched within 24–48 hours, with most deliveries arriving in 2–3 business days. Rural and remote areas may take up to 5 business days.
International shipping is available, with rates calculated at checkout. Local pickup is available from Echuca, VIC — please call ahead on 03 9989 9921 before visiting.
Returns and exchanges may be accepted within 30 days of receiving your order, provided items are in saleable condition, include original packaging and proof of purchase. Returns are assessed case by case.
Change-of-mind returns, incorrectly ordered items, clearance items and products damaged through misuse or wear and tear are not returnable. Please contact us before sending back any item, especially for warranty claims.
