The Holley Aluminum Street HP Carburetor combines race-bred 4150 HP and Double Pumper features in a carburetor calibrated for street and light competition use. Its aluminum contoured main body saves weight versus cast iron, while screw-in air bleeds provide precision tuning and a timed spark port supports a vacuum advance distributor for strong throttle response and drivability.
Specifications:
- CFM: 950
- Model: 4150
- Secondaries: Mechanical
- Finish: Shiny (Polished)
- Material: Aluminum
- Flange Type: Square/4150
- Fuel Type: Gasoline
- Primary Main Jet: 84
- Secondary Main Jet: 84
- Primary Power Valve: 4.5
- Throttle Bore: 1.750 in.
- Venturi Size: 1.563 in.
- Warranty: Manufacturer's Limited 90 Day Warranty
- Part Number: 0-82951SA
This carburetor uses the square-bore flange bolt pattern (5-3/16 in. x 5-5/8 in.) and can replace Holley, Edelbrock, Carter AFB, and Autolite carburetors with that pattern. An adapter is required for spreadbore-style intake manifolds.
FAQ
What CFM rating is the 0-82951SA carburetor?
It's rated at 950 CFM, sized for lightweight vehicles with a manual transmission or an automatic with a high-stall converter and low gearing.
Does this carburetor use mechanical or vacuum secondaries?
It uses mechanical secondaries for strong throttle response under hard acceleration.
What bolt pattern does it use?
A square-bore flange bolt pattern (5-3/16 in. x 5-5/8 in.), compatible with Holley, Edelbrock, Carter AFB, and Autolite carburetors of that pattern.
Is an adapter needed for spreadbore intake manifolds?
Yes, a spreadbore-to-square-bore adapter is required to install this carburetor on a spreadbore-style intake manifold.

