This model of carburetor has the square bore flange bolt pattern. It can replace Holley, Edelbrock, Carter AFB, and Autolite style carburetors with 5 3/16" x 5 5/8" bolt pattern. If you have a spreadbore style intake manifold, you will need an adapter to install this carburetor. Similar to the Mr. Gasket #1932.

The Ultra Double Pumper™ Carburetors feature all aluminum construction and are equipped with metering blocks and a base plate made from 6061-T6 billet aluminum. They weigh in at approximately 5 lbs. less than a comparable zinc carburetor. The new Ultra Double Pumper Carburetors have an enhanced fuel curve for optimum performance, with many more features such as aluminum construction; 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. The clean, stealthy look coupled with Black metering blocks and throttle body will certainly set your ride apart whether you are at the show or track.

• Hard Core Gray™ w/ black anodized billet aluminum metering blocks/base plate. Casting is hard coat anodized for ultimate corrosion resistance

• Ultra Double Pumpers feature an Optimized street/strip calibration that works out-of-the-box

• Factory preset electric choke for easy startups

• Mechanical secondaries for awesome tire turning performance

• 4 corner idle allows you to precisely control your idle system

• Built in, clear fuel level sight glass for easy, no mess fuel level adjustments

• Aluminum construction for a 43% weight savings

• Compatible with GM, Chrysler, and Ford A/T kickdown linkage. Additional parts may be required.

• Intended for lightweight vehicles w/ manual trans or automatics with high stall & low gearing

• 100% wet-flow tested by Holley technicians to assure it arrives ready to run!

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