Carburetor Main Body 
750 CFM; Gas

Features Hi-Performance, Down-Leg Boosters; Natural Finish
Also fits Holley® #4777, 4778, 4779 & 4780 Models
Features:
  • For Use with Holley® 4777, 4778, 4779 and 4780 Carbs
  • No Air Horn
  • Adjustable Air Bleeds and High-Performance Down-Leg Boosters
  • Comes with Gaskets and Jet Kit
  • Natural Aluminum
  • 100% New
  • 100% New Components
  • Comes with Gaskets and Jet Kit
  • Sold Individually
PART# 67100C
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Direct Replacement Components to turn a street carburetor into a high-performance carb: get that extra performance out of your ride in less than 30 minutes! Add up to 25-50 HP with PROFORM's 100% NEW, high-performance carburetor main body (no re-built components). Easy swap-in, swap-out installation utilizing existing metering blocks, fuel bowls, and baseplate. Involves only 14 screws. Has adjustable screw-in air bleeds, high-performance down-leg boosters. Get maximum air flow with no air horn, choke tower, or choke control. Comes with instructions, all necessary non-stick replacement gaskets, and high-performance jet kit. Technical Note: Main body does not retain vacuum advance port in original metering block.

PROFORM is a registered trademark of Specialty Auto Parts USA, Inc. Holley® and Double Pumper® are registered trademarks of Holley Performance Products, Inc. No carburetor products sold under the PROFORM® trademark, including such parts as may fit with or replace a Holley® part number application, are designed, made, or endorsed by Holley Performance Products, Inc. or any other carburetor manufacturer.

  • Made of Aluminum
Attribute Value
Warning for part number #67100C:
  • This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.
Proposition 65 (LEAD):
  • Lead and lead compounds
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