4150 ALUM ULTRA XP 750 CFM (HARD BLACK)

The Holley 0-80803HBX is a 750 CFM Ultra XP 4-barrel carburetor with a square bore and mechanical secondaries. It features all-aluminum construction with a Hard Core Gray hard coat anodized finish and black billet metering blocks and base plate for improved corrosion protection. It is 38% lighter than original HP carbs and offers 20% greater fuel capacity in its high-capacity bowls with integrated baffling and fuel shelf to prevent starvation and aeration. Key features include: an integrated idle bypass valve for precise idle adjustment (even with radical camshafts), dual 30cc accelerator pumps, 8AN o-ringed inlet threads, 4-corner idle, elongated (dual pattern) mounting holes for 4150 or 4500 series manifolds, knurled (hand adjustable) primary and secondary curb idle screws, a capped primary throttle shaft, a factory machined accessory mounting hole for an adjustable primary throttle stop, and a stainless steel adjustable secondary link for 1:1 or progressive throttle actuation. Each carburetor is 100% wet-flow tested by Holley technicians. Designed for drag race, circle track, or any high horsepower engines. Available in 600, 650, 750, 850, and 950-CFM.