Xtreme Performance - Holley Ultra XP™ carburetors! Ultra XP carbs are up to 38% lighter than our traditional race carbs, have fuel capacity that is 20% greater and 30 other new features! They're available in our all-new Hard Core Gray™ hard coat anodized finish with Black™ billet for improved corrosion protection. They're also available in natural tumble-polished aluminum with your choice of Black™ or Red™ metering blocks and base plate. The Aluminum Ultra XP comes in 600, 650, 750, 850, and True 950-CFM. Holley Ultra XP carburetors offer new features such as an integrated idle bypass valve that allows for idle adjustments while maintaining the correct throttle plate to transfer slot relationship, high capacity fuel bowls which feature 20% more fuel capacity to eliminate starvation, integrated fuel shelf to minimize fuel aeration and internal baffling to control fuel slosh. Other features include all aluminum construction, fully tunable billet metering blocks, billet base plate, adjustable secondary linkage and knurled (hand adjustable) curb idle screws. Holley Ultra XP carburetors are the ultimate in square bore race carburetors!
Primary Jet Size: 84
Primary Power Valve: 4.5 Hg
Primary Discharge Nozzle Size: 0.031"
Secondary Jet Size: 84
Primary Outer Air Bleed Sizes Included: 67
Primary Inner Air Bleed Sizes Included: 34
Secondary Discharge Nozzle Size: 0.031"
Secondary Power Valve: 4.5
Secondary Outer Air Bleed Sizes Included: 67
Secondary Inner Air Bleed Sizes Included: 34
Carburetor Finish: Gray anodized
Ford Kickdown: No
Booster Type: Down-leg
Throttle Linkage Type: Universal
Carburetor Height: 3.250"
Quantity: Sold Each
Notes: Billet aluminum black anodized metering blocks. -8AN O-ringed inlet threads. Come standard with -8AN o-ring to -6AN male adapter and -8AN plug. Can be plumbed from either side.
Special Attention: Holley Ultra XP race carburetors are for race applications only and are not designed or suggested for street use. Ultra XP carburetors do not provide attachment points for street transmissions, vacuum outlets or stock throttle linkage and cables.
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