Available in an all-new Hard Core Gray™ hard coat anodized finish with Black™ billet for improved corrosion protection, Holley Ultra XP™ Methanol carbs are 38% lighter than our original HP with 20% greater fuel capacity plus 30 other new features, including:
- Integrated idle bypass valve for idle adjustments while maintaining correct throttle plate to transfer slot relationship
- High-capacity fuel bowls that offer 20% more capacity to eliminate starvation
- Integrated fuel shelf to minimize fuel aeration
- Internal baffling to control fuel slosh
- Fully tunable billet metering blocks
- Billet base plate
- Adjustable secondary linkage and knurled (hand adjustable) curb idle screws
- Methanol-specific calibration
- Contoured venturii inlet for balanced airflow and increased horsepower
- Air bleeds moved outward for a smoother airflow transition from the top of the carburetor into the venturii
- Dual 50-cc accelerator pumps for the perfect amount of fuel from idle to full throttle
- Built-in drain plug in front center of bowl for easy emptying
- 8AN (o-ringed) inlet threads for a wide variety of plumbing options (can be plumbed from either side)
- Mechanical secondaries for perfect off-the-line launches
- Elongated (dual pattern) mounting holes for fitment on intakes with square flanges (Holley 4150™ style) or large flanges (Holley Dominator® style)
- Notched float and jet extensions
Holley 0-80835HBX
