The Holley Ultra XP is an Xtreme Performance race carburetor built up to 38% lighter than Holley's traditional race carbs, with 20% more fuel capacity and dozens of refinements for competition use. This unit is finished in Hard Core Gray hard-coat anodizing with black anodized billet metering blocks and booster inserts for corrosion resistance, and it's calibrated specifically for E85 fuel with .130 inch stainless needles and seats sized for E85's higher flow demand.
Specifications:
- CFM: 950
- Carburetor Use: Professional Race
- Fuel Type: E85
- Secondaries: Mechanical
- Finish: Hard Core Gray with Black Billet
- Body Finish: E-Coated
- Flange Type: Square/4150
- Material: Aluminum
- Model: 4150
- Fuel Inlet: Dual
- Booster Design: Downleg
- Primary Main Jet: 96
- Primary Power Valve: 5.5
- Primary Pump Nozzle Size: 42
- Secondary Main Jet: 106
- Secondary Pump Nozzle Size: 50
- High Speed Air Bleed: 24
- Idle Air Bleed Size: 67
- Throttle Bore: 1.750 inch
- Venturi Size: 1.600 inch
- Warranty: Manufacturer's Limited 90 Day Warranty
- Part Number: 0-80845HBX
This carburetor uses a dual mounting-hole pattern, allowing installation on manifolds machined for either a 4150 square-bore or a Dominator-style large-flange carburetor.
FAQ
What CFM rating does this Holley Ultra XP carburetor have?
This Ultra XP carburetor is rated at 950 CFM.
What fuel is this carburetor calibrated for?
It's calibrated specifically for E85 and uses .130 inch stainless needles and seats sized for E85's higher flow demand.
What type of secondaries does this carburetor use?
It uses mechanical secondaries for immediate throttle response off the line.
What finish is this carburetor available in?
It's finished in Hard Core Gray hard-coat anodizing with black anodized billet aluminum metering blocks and booster inserts.
Will this carburetor fit a Dominator-flange intake manifold?
Yes, its dual mounting-hole pattern allows it to bolt to manifolds machined for either 4150 square-bore or Dominator-style large-flange carburetors.
