Holley 650 CFM Classic HP Carburetor

For nearly two decades, Holley HP™ carburetors have set the benchmark in the world of racing. Whether you’re part of a professional NASCAR team or just hitting the track on a Saturday night, these carburetors are an excellent choice for every motorsport enthusiast.

The Classic HP series offers a range from 390 to 1000 CFM, featuring a specially designed contoured venturi inlet that ensures balanced airflow. With screw-in air bleeds, tuning becomes a breeze, and the high-flow metering blocks paired with Dominator-style fuel bowls make installation easy by allowing plumbing from either side.

When it comes to square bore race carburetors, Holley HP is the go-to option. They come race-ready right out of the box!

• Gold Dichromate finish for excellent corrosion resistance
• Optimized race calibration for peak performance
• Contoured venturi inlet for balanced airflow, boosting horsepower
• Screw-in air bleeds for precise tuning
• Dual 30cc accelerator pumps for that extra fuel when you need it
• Dual feed fuel inlets ensure a steady high-volume fuel supply
• Four-corner idle system allows for precise idle adjustments
• Progressive secondaries for smooth off-the-line launches
• Durable stainless steel throttle plates
• Includes notched float and jet extensions for optimal performance
• Calibrated specifically for gasoline
• 100% wet-flow tested by Holley technicians to make sure it's ready to run!

• This carburetor features a square bore flange bolt pattern, making it compatible with Holley, Edelbrock, Carter AFB, and Autolite carburetors that have a 5 3/16" x 5 5/8" bolt pattern. If your intake manifold is of the spreadbore style, you’ll need an adapter, like the Mr. Gasket #1932, for installation.