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!
Features
- CFM:
- 850
- Fuel:
- Gasoline
- Number of Barrels:
- 4
- Carburetor Flange:
- Square bore/Dominator
- Choke:
- Manual
- Secondary Type:
- No Choke
- Fuel Inlet:
- Dual
- Carburetor Material:
- Aluminum
- Carburetor Finish:
- Tumble Polished/Black
- Primary Jet Size:
- 84
- Secondary Jet Size:
- 84
- Primary Power Valve (Hg):
- 4.5
- Secondary Power Valve (Hg):
- N/A
- Primary Inner Air Bleed Sizes Included:
- Yes
- Secondary Inner Air Bleed Sizes Included:
- Yes
- Throttle Bore Size:
- 1.7500 in.
- Throttle Linkage Type:
- Universal
- Primary Pump Nozzle Size:
- 32
- Secondary Pump Nozzle Size:
- 32
- Carburetor Height (in.):
- 3.250 in
- Ford Kickdown:
- No
- Booster Type:
- Down-leg
- Bowl Inlet Size:
- N/A
- Vacuum Ports:
- N/A
- Universal:
- Yes
- Quantity:
- Sold individually.
