Proform PR67312 650 CFM Double Pumper 4-Barrel Carburettor - Black Billet Base Plate & Metering Block w/ Electric Choke

Based on the wildly successful Race Series carburetors the new PROFORM street carburetors are constructed of light weight aluminum, and changeable idle air bleeds for easy non-permanent calibration changes if needed. Keep your drills in your tool box; fine tuning is accomplished by simply changing air bleeds not opening calibration restrictions with a drill bit.

Each street carburetor features billet metering blocks with a street performance calibration developed for today’s high performance engines. Four corner idle on mechanical secondary carburetor to help fine tune the idle with aggressive camshaft profile. Changeable idle feed restrictions further expand the idle adjustment capabilities. Conventional service and tuning components are available in most performance retail outlets.

You’ll also find the popular billet throttle body for superior strength, coupled with precision throttle shafts to ensure long term performance. All PROFORM carburetors have easy access adjustable secondary air flow. Other carburetors require special tools or removal of the carburetor to accomplish this simple adjustment.

The package is completed with high quality, light weight die-cast aluminium fuel bowls with fuel level windows for quick visual reference. Float level changes do not require removal of a sight plug with the risk of fuel spilling all over the top of your engine. Bowls come equipped with 3/8" inverted flare fuel inlet fittings and will accept all conventional dual feed fuel lines compatible with Holley® four barrel carburetors.

Like all PROFORM carburetors, service parts are readily available however, should you not find PROFORM service parts, our carburetors are compatible with any modular carburetor service parts available at your local parts store or favorite retail outlet.