Description
Mechanical Secondary NASCAR Approved-4150
Features:
- Gold Dichromate finish for corrosion resistance
- Optimized race calibration
- Contoured venturri inlet offers balanced airflow for increased horsepower
- Screw in air bleeds for precision tuning capabilities
- Dual 30cc accelerator pumps for additional fuel under initial acceleration
- Dual feed fuel inlets for constant high volume fuel delivery
- 4 corner idle allows you to precisely control your idle system
- Progressive Secondaries for perfect off the line launches
- Stainless steel throttle plates
- Includes notched float and jet extensions
- Calibrated for gasoline
- 100% wet-flow tested by Holley technicians to assure it arrives ready to run!