Holley 650 CFM Aluminum Street HP Carburetor

Tire smoking performance has never been so affordable! The all new Aluminum Street HPs weigh up to 40% less and are even easier on your wallet. Holley is proud to introduce the all new Aluminum Street HP(TM). They utilize the best features from Holley's Race Bred 4150 HP(TM) carbs, but are tamed for street and light competition use. The Street HP features an aluminum contoured main body design taken from the race winning 4150 HP(TM) and has a tumble polished shiny finish and screw in air bleeds for precision tuning capabilities. The metering system includes a timed spark port for a vacuum advance distributor and is calibrated for a hot street/strip engine setup for outstanding throttle response, drivability and maximum performance. A street HP base plate is used so there are plenty of vacuum ports for power brakes, PCV, etc. The Aluminum Street HP takes all the great features from the race bred HP and the Double Pumper and combines them into the perfect street/strip carburetor.

Holley has been the undisputed leader in fuel systems for over 100 years. Holley carburetors powered every NASCAR Cup team and nearly every NHRA Pro-Stock champion for four decades. Now, Holley EFI products power these cars and are dominating the performance world. Holley products for GM's popular LS engine are dominating the LS scene as well. Holley's products also include performance fuel pumps, intake manifolds and engine dress-up products for street performance, race and marine applications. As a single solution or partnered with products from other Holley companies we can give you the edge you need over the competition!

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.

Optimized street/strip calibration for outstanding throttle response and drivability

Contoured venturi inlet offers balanced airflow for increased horsepower

Screw in air bleeds for precision tuning capabilities

Four corner idle for precise idle control

Mechanical secondaries for awesome tire turning performance

Dual accelerator pumps for additional fuel under initial acceleration

Dual feed fuel inlets for constant high volume fuel delivery

Available in 650, 750, 850, and 950 CFM versions

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!

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

Product Description:

Carburetor

Street HP

Model 4150

HP Street

4-Barrel

650 CFM

Square Bore

No Choke

Mechanical Secondary

Dual Inlet

Aluminum

Natural / Tumble Polished

Sold Individually

For over a century Holley has driven the cutting edge of fuel-system design. That work continues today through Holley’s market-leading EFI products as well as through Holley’s family of best-in-industry brands. Top brands like MSD, Flowmaster, Hurst, Accel, and many more make up the industry’s leading offering of enthusiast-driven products to deliver robust, complete performance solutions for builders, racers, and drivers. From propelling the LS-, Coyote-, and Gen 3 Hemi-swap trends, to continuously innovating late-model and vintage vehicle performance, Holley’s commitment to its customers and their cars is at the core of everything we do.