The Holley Ultra XP Carburetor is up to 38 percent lighter than traditional race carburetors, with 20 percent more fuel bowl capacity and over 30 new features. This version wears the Hard Core Gray hard-coat anodized finish with black anodized billet metering blocks and booster inserts for improved corrosion protection, built for drag race, circle track, or high-horsepower applications.
Specifications:
- CFM: 850
- Model: 4150
- Secondaries: Mechanical
- Finish: Hard Core Gray
- Billet Color: Hard Core Gray with Black
- Material: Aluminum
- Flange Type: Square/4150
- Fuel Type: Gasoline
- Fuel Inlet: Dual (8AN O-ringed)
- Carburetor Use: Professional Race
- 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: 0-80804HBX
This carburetor is built with a dual mounting pattern, so it can be installed on a manifold machined for either a 4150 (square flange) or 4500 (Dominator-style large flange) series carburetor.
FAQ
How much weight does the Ultra XP save versus a traditional race carburetor?
Up to 4.5 lbs, about 38 percent lighter, thanks to its aluminum construction.
What secondaries does the 0-80804HBX use?
Mechanical secondaries, suited to hard launches in drag race and circle track applications.
What intake manifolds fit this carburetor?
Its dual, elongated mounting holes fit intakes machined for either the Holley 4150-style square flange or the Holley Dominator-style large flange.
What type of fuel inlets does it have?
Dual 8AN O-ringed inlet threads that can be plumbed from either side.
