Unleash peak performance with Holley Ultra XP™ Carburetors! These carburetors redefine the standards, being 38% lighter than traditional race carbs, featuring a 20% greater fuel capacity, and incorporating 30 innovative features! Available in the cutting-edge Hard Core Gray™ hard coat anodized finish with Black™ billet for enhanced corrosion protection, or in natural tumble-polished aluminum with customizable Black™ or Red™ metering blocks and base plate. The Aluminum Ultra XP comes in 600, 650, 750, 850, and True 950-CFM configurations, catering to diverse high-performance needs.
Key Features:
- Aluminum Construction (saves 4.5 lbs - 38% weight savings)
- Hard Core Gray with black anodized billet aluminum metering block and booster inserts
- Designed for use on Drag race, circle track, or any high horsepower engines
- E85 specific calibration
- Contoured venturri inlet offers balanced airflow for increased horsepower
- Outward-moved air bleeds for a smoother transition of airflow from the top of the carburetor into the venturii
- Improved durability in metering blocks with true gasket sealing and full adjustability (emulsion bleeds, power valve channel restrictors & idle feed restrictors)
- 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. Ideal for maintaining good idle control when using radical camshafts.
- Dual 30cc accelerator pumps provide the perfect amount of fuel from idle to full throttle
- Fuel bowls provide 20% more fuel capacity, controlling slosh with internal baffling
- Clear sight windows on both sides facilitate easy and safe fuel level adjustments
- Built-in drain plug in the front center for convenient access to empty bowl contents
- 8AN (o-ringed) inlet threads provide a variety of plumbing options, allowing plumbing from either side
- .130" stainless needle & seats for precise control of E-85 demand
- 4 corner idle allows you to precisely control your idle system
- Mechanical Secondaries for flawless off-the-line launches
- Elongated (dual pattern) mounting holes for compatibility with square flange (Holley 4150™ style) or large flange (Holley Dominator® style) intakes
- Knurled (hand adjustable) primary and secondary curb idle screws for easy idle adjustment without tools
- Capped primary throttle shaft to prevent entry of debris & contaminants
- Factory machined accessory mounting hole for easy addition of an adjustable primary throttle stop
- New secondary pump cam lever designed for positive throttle stop on the secondary side
- Stainless steel adjustable secondary link for choice of 1:1 or progressive secondary throttle actuation, ensuring ultimate control of secondary opening rate
- Baseplate designed with a machinable boss for consumer customization of a vacuum source
- Stainless steel throttle plates
- Includes notched float and jet extensions
- 100% wet-flow tested by Holley technicians to ensure it arrives ready to run!
- Local Pickup Available:
- No
- Local Delivery Available:
- No
- Additional Handling:
- No
