Holley 0-80805HB Ultra XP Gas 950 CFM 4 Barrel Carburetor

Holley HP™ four barrel Carburetors have been the standard in racing four barrel carburetors for nearly two decades. So how do you make them better? You make them 38% lighter, increase the fuel capacity by 20% and add 30 other new features! They're available in an all–new Hard Core Gray™ hard coat anodized finish with Black™ billet for superior corrosion protection.

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Note: Fuel inlets are spaced 9.75" on center which will require a lengthened fuel line / fuel log arrangement. Fuel bowl inlets feature -8 AN O-ring port fittings to allow for a large variety of plumbing options. Fuel bowl can be plumbed from either side.

• Aluminum Construction
  
  • Saves 4.5 lbs - 38%
• Billet Aluminum Metering Blocks
  
  • Fully adjustable (emulsion bleeds, power valve channel restrictors and idle feed restrictors)
  • Power valve channel restrictors now machined lower in metering block for improved fuel delivery to power valve circuit
• Billet Aluminum Base Plates
  
  • Stainless steel adjustable secondary link
  • Provides choice of 1:1 or progressive secondary throttle actuation for ultimate control of secondary opening rate
• All New Fuel Bowl Design
  
  • 20% more fuel capacity vs. a traditional v-bowl eliminates fuel starvation and provides consistent air/fuel ratios
• Updated Main Body Design
  
  • Integrated idle bypass valve eliminates the need for holes in throttle plates and allows for proper adjustment of idle while maintaining correct throttle plate to transfer slot relationship
  • Helps maintain good idle control when using radical camshafts

• Aluminum Construction
  
  • Saves 4.5 lbs - 38%
• Billet Aluminum Metering Blocks
  
  • Fully adjustable (emulsion bleeds, power valve channel restrictors and idle feed restrictors)
  • Power valve channel restrictors now machined lower in metering block for improved fuel delivery to power valve circuit
• Billet Aluminum Base Plates
  
  • Stainless steel adjustable secondary link
  • Provides choice of 1:1 or progressive secondary throttle actuation for ultimate control of secondary opening rate
• All New Fuel Bowl Design
  
  • 20% more fuel capacity vs. a traditional v-bowl eliminates fuel starvation and provides consistent air/fuel ratios
• Updated Main Body Design
  
  • Integrated idle bypass valve eliminates the need for holes in throttle plates and allows for proper adjustment of idle while maintaining correct throttle plate to transfer slot relationship
  • Helps maintain good idle control when using radical camshafts

Holley 950 CFM 4 Barrel Carburetor Installation Instructions (PDF)

New Features! (JPG)