Description
Holley 750 CFM Ultra XP 4-Barrel Race Carburetor
Hard Core Gray Anodized Finish with Black Billet Aluminum Metering Blocks & Base Plate
Engineered for maximum competition performance, the Holley Ultra XP 750 CFM Carburetor (0-80803HBX) represents the pinnacle of square-bore race carburetion. Featuring an all-aluminum construction that yields up to 38% weight savings (saving approximately 4.5 lbs over traditional zinc bodies), this carburetor is finished in Holley’s durable Hard Core Gray™ hard-coat anodize paired with precision CNC-machined black billet metering blocks and base plate. Designed explicitly for drag race, circle track, and high-horsepower competition engines, the Ultra XP series delivers unrivaled air/fuel metering precision, maximum fuel capacity, and extreme corrosion resistance.
Key Features
- ☑ Lightweight Aluminum Construction: Reduces top-end engine weight by up to 38% compared to standard cast zinc carburetors.
- ☑ Hard Core Gray Anodized Finish: Hard-coat anodizing provides superior surface protection against harsh race fuels and engine bay heat.
- ☑ Integrated Idle Bypass Valve: Allows idle speed adjustments without disrupting the critical throttle plate to transfer slot relationship, perfect for radical race cams.
- ☑ High-Capacity Fuel Bowls: Provides 20% greater fuel volume with dual clear-sight glass windows for safe, rapid fuel level checks.
- ☑ Fully Tunable Billet Components: Precision CNC-machined black anodized billet metering blocks and base plate ensure distortion-free sealing and precise jetting control.
- ☑ Versatile Plumbing Options: Features -8AN O-ring inlet threads with included adapters to streamline high-flow fuel line plumbing.
Technical Specifications
| Brand | Holley |
|---|---|
| Part Number | 0-80803HBX |
| CFM Rating | 750 CFM |
| Carburetor Model | 4150 Ultra XP |
| Circuit Type | 2-Circuit Race Calibration |
| Flange Type | Square Bore 4-Barrel |
| Main Material | Cast Aluminum Body with Billet Aluminum Blocks |
| Finish | Hard Core Gray™ Body / Black Anodized Billet |
| Secondary Type | Mechanical (Double Pumper) |
| Booster Type | Down Leg |
| Fuel Inlet Thread | -8AN O-Ringed (Includes -8AN to -6AN Adapters) |
| Primary & Secondary Nozzle Size | 0.031″ / 0.031″ |
What’s Included in the Box
- (1) Holley Ultra XP 750 CFM Carburetor (PN 0-80803HBX)
- (2) -8AN O-Ring to -6AN Male Fitting Adapters
- (1) -8AN Port Plug
- (1) Square-Bore Flange Mounting Gasket
- Carburetor Mounting Hardware Kit
JP Racing is an authorized UK supplier of genuine Holley performance parts. All Holley race carburetors are 100% wet-flow tested before leaving the factory to guarantee out-of-the-box reliability. Contact our UK technical sales team for expert advice on fuel system sizing and race setup options.
Reviews
There are no reviews yet.