Holley 950 CFM Aluminum Street HP Mechanical Secondary Carburetor

Get ready for some serious performance without breaking the bank! The all-new Aluminum Street HP carburetors are designed to weigh up to 40% less, making them a fantastic choice for your vehicle while being easy on your wallet.

Holley is thrilled to present the Aluminum Street HP™. These carburetors bring together the best features from Holley's race-inspired 4150 HP™ models, but with a twist—they’re tailored for street and light competition use. The Street HP boasts an aluminum contoured main body design derived from the race-winning 4150 HP™, featuring a tumble-polished shiny finish and screw-in air bleeds for precise tuning. The metering system includes a timed spark port for a vacuum advance distributor, perfectly calibrated for a hot street or strip engine setup, ensuring you enjoy exceptional throttle response and drivability.

With a base plate designed for the street HP, you'll find plenty of vacuum ports for power brakes, PCV, and more. This carburetor combines all the standout features of the race-bred HP and the Double Pumper, creating the ultimate street/strip carburetor experience.

Important Downloads:

• Instructions for Part # 0-82951SA
• Carburetor Numerical Listing for Part #0-82951SA
• Instructions for Part # 0-82851SA
• Carburetor Numerical Listing for Part #0-82851SA

Features:

• Lightweight aluminum construction for durability and stunning looks
• Optimized calibration for street and strip applications, ensuring fantastic throttle response
• Contoured venturi inlet for balanced airflow, boosting horsepower
• Screw-in air bleeds for accurate tuning
• Four corner idle system for precise idle control
• Mechanical secondaries for impressive tire-spinning performance
• Dual accelerator pumps for extra fuel during initial acceleration
• Dual feed fuel inlets for consistent high-volume fuel delivery
• Available in 650, 750, 850, and 950 CFM options
• Designed for lightweight vehicles with manual transmissions or automatics featuring high stall and low gearing
• Thoroughly wet-flow tested by Holley technicians, ensuring it’s ready to run right out of the box!
• Compatible with GM, Chrysler, and Ford A/T kickdown linkage; additional parts may be needed.

Specifications:

• Barrels: 4
• Booster: Straight
• CFM: 950
• Choke: None
• Emission Code: 3
• Finish: Shiny
• Fuel: Gasoline
• Material: Aluminum
• Model: 4150
• Primary Main Jet: 84
• Primary Power Valve: 4.5
• Primary Pump Nozzle Size: 31
• Product Type: 4150 Model Carburetor
• Secondaries: Mechanical
• Secondary Main Jet: 84
• Secondary Pump Nozzle Size: 31
• Supercharged Application: No
• Throttle Bore: 1.750 inch
• Venturi Size: 1.563 inch
• Warranty: Limited 90 Day

Notes:

• This carburetor features a square bore flange bolt pattern, allowing it to replace Holley, Edelbrock, Carter AFB, and Autolite style carburetors with a 5 3/16" x 5 5/8" bolt pattern. If you're using a spreadbore style intake manifold, an adapter will be necessary for installation, similar to the Mr. Gasket #1932.