Holley's HP Series methanol four barrel carburetors set the standard in oval track race carbs. These performance calibrated alcohol four barrel carbs are race ready, right out of the box. The Model 4150 HP 4 barrel carb is packed with premium features like contoured air entries, high strength castings, and stainless throttle plates, all of which will provide you with a definite advantage at the track.
- Calibrated for Methanol
- Dichromate finish
- Contoured Venturi inlet
- Booster venturi is a down-leg, double step design providing a considerably stronger vacuum signal
- Screw-in air bleeds for precision tuning
- High flow metering blocks
- Viton® Non-stick gaskets
- Lightweight slotted misture screws for tuning stability
- Four corner idle system
- Stainless steel throttle plates
- Button head throttle plate screws for superior airflow
- Center hung Dominator style fuel bowls
- Spun-in down leg style boosters
- High strength sealing surfaces
- Power valve blow-out protection
- 100% wet flow tested and calibrated
- Progressive mechanical secondaries
- Double 30cc accelerator pumps
- Venturii size: 1.376"
- Throttle bore: 1.688"
Holley 4 Barrel Carburetor Installation Instructions (PDF)