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Holley 0-76750HB 750 CFM Ultra Double Pumper 4 Barrel Carb


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Q & A

What's in the Box

The new Ultra Double Pumper four barrel carburetors have an enhanced fuel curve for optimum performance, with many more features such as aluminum construction; Hard Core Gray™ finish w/ black 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; Ford automatic transmission kickdown for use on popular 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.

  • ULTRA light – aluminum construction for 36% weight savings
  • ULTRA strong – billet metering blocks & base plates
  • ULTRA cool – Hard Core Gray™ w/ black anodized billet aluminum metering blocks and base plate
  • ULTRA easy – built in sight window for simple float adjustments
  • ULTRA fast – high performance fuel curves

Holley Double Pumper Carburetor Installation Instructions (PDF)


  • Hard Core Gray™ w/ black anodized billet aluminum metering blocks/base plate with black hardware
  • Ford A/T kickdown, does not work with AOD transmissions
  • Mechanical secondaries
  • Intended for lightweight vehicles w/ manual trans
  • or automatics with high stall & low gearing
  • 1 timed (spark) port, 1 full vacuum, and 1 PCV port
  • Glass fuel level sight windows for easy and safe initial float level adjustment
  • Aluminum construction for weight savings
  • Electric choke for easy cold starting and warm up
  • 4-corner idle adjustment
  • Casting is hard coat anodized for ultimate corrosion resistance