Holley Street HP 4150 Carburetor

• Equip your street build with the Holley Street HP 4150 Carburetor for crisp throttle feel
• Combines race-bred 4150 HP and Double Pumper design elements for street and mild racing applications
• Aluminum construction cuts weight by as much as 40%
• Shaped venturi entrances, replaceable screw-in air bleeds, and four-corner idle circuits support detailed adjustment
• Mechanical secondary operation, two accelerator pumps, and dual-feed fuel inlets promote quick response
• Offered in 650, 750, 850, and 950 CFM capacities for lighter vehicles using manual gearboxes, high-stall automatics, or low numerical gearing
• Includes 90-Day Warranty coverage

Give a street machine more immediate throttle response and acceleration with the Holley Street HP 4150 Carburetor. It combines performance-oriented features with a polished aluminum appearance for street and light-competition builds.

Drawing from Holley 4150 HP and Double Pumper designs, this carburetor uses a lightweight aluminum body that can reduce weight by up to 40%. Contoured venturi entries, replaceable screw-in air bleeds, four-corner idle adjustment, mechanical secondary throttles, two accelerator pumps, and dual-feed fuel inlets provide airflow control and extensive tuning flexibility.

Offered in 650, 750, 850, and 950 CFM ratings, the Street HP 4150 is suited to lighter vehicles equipped with manual transmissions or automatic transmissions using high-stall converters and lower gearing. The 650- and 750-CFM versions include timed-spark and vacuum ports for applicable street accessories. GM, Chrysler, and Ford automatic-transmission kickdown linkage can be accommodated with any required application-specific components. Each carburetor is wet-flow tested by Holley technicians and backed by a 90-Day Warranty.