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Holley Aluminum Ultra XP Carburetors 0-80803RDX Carburetors, XP, 750 cfm, 4-barrel, Square Bore and Dominator Mounting, Mechanical Secondaries, Dual Inlet, Shiny and Red Finish, Each

SKU: HLY0-80803RDX

Carburetors

Holley Aluminum Ultra XP Carburetors 0-80803RDX Carburetors, XP, 750 cfm, 4-barrel, Square Bore and Dominator Mounting, Mechanical Secondaries, Dual Inlet, Shiny and Red Finish, Each

SKU: HLY0-80803RDX

Carburetors

Sale ends in Calculating...

A$2,907.63 A$2,916.32
IN STOCK! Est Ship 4-7 days. This item is IN STOCK at one of our warehouses or distribution centres, the ETA is the approximate time required to prepare your order for dispatch.
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Description

Holley's Ultra XP carburetors are up to 38 percent lighter than their traditional carbs, offer 20 percent greater fuel capacity, and include a host of other features. One of the main perks is an integrated idle bypass valve that allows for idle adjustments while maintaining the proper throttle-plate-to-transfer-slot relationship. You'll also get all-aluminum construction, fully tunable billet metering blocks, billet base plate, adjustable secondary linkage, and knurled (hand-adjustable) curb idle screws. Enjoy the ultimate in square-bore race carbs; order the Ultra XP carburetor with options best suited for your race application!

Some of the many other features include:

* Your choice of several finishes and CFM ratings (from 600 to 950)
* Contoured Venturi inlet offers balanced airflow for increased hp
* Dual accelerator pumps provide the perfect amount of fuel, from idle to full-throttle
* Clear sight windows on both sides of bowls for safe and easy fuel level adjustments
* -8 AN (O-ringed) inlet threads offer a large variety of plumbing options from either side
* Mechanical secondaries for perfect off-the-line launches
* 100-percent wet-flow tested by Holley technicians

Part Type

Ultra HP Carburetor - 750CFM

Data: v4.2 - Upd: 2026-10-15 03:10:08

Specifications

Product Attributes - Brand
Holley
Product Attributes - Manufacturer's Part Number
0-80803RDX
Product Attributes - Part Type
Carburetors
Product Attributes - Product Line
Holley Aluminum Ultra XP Carburetors
Product Attributes - UPC
090127713457
Product Attributes - CFM
750
Product Attributes - Fuel Category
Gasoline
Product Attributes - Remanufactured
No
Product Attributes - Number of Barrels
4
Product Attributes - Carburetor Flange
Square bore/Dominator
Product Attributes - Choke
None
Product Attributes - Secondary Type
Mechanical
Product Attributes - Fuel Inlet
Dual
Product Attributes - Primary Jet Size
76
Product Attributes - Primary Power Valve (Hg)
6.5 Hg
Product Attributes - Primary Discharge Nozzle Size (in.)
0.031 in.
Product Attributes - Secondary Jet Size
76
Product Attributes - Primary Outer Air Bleed Sizes Included
73
Product Attributes - Primary Inner Air Bleed Sizes Included
36
Product Attributes - Secondary Discharge Nozzle Size (in.)
0.031 in.
Product Attributes - Secondary Power Valve
6.5
Product Attributes - Secondary Outer Air Bleed Sizes Included
73
Product Attributes - Secondary Inner Air Bleed Sizes Included
36
Product Attributes - Carburetor Color
Tumble polished
Product Attributes - Ford Kickdown
No
Product Attributes - Booster Type
Down-leg
Product Attributes - Throttle Linkage Type
Universal
Product Attributes - Carburetor Height (in.)
3.250 in.
Product Attributes - Quantity
Sold individually.
Product Attributes - Notes
Billet aluminum red 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.
Product Attributes - 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.

Reference Information

Brand Name/s Holley
StreetFX SKU hly0-80803RDX
SFX Item ID 4784299
Supplier Item Code 4784299
Manufacturer SKU 0-80803RDX
Manufacturer UPC 90127713457
Alternative References HOL0-80803RDX, 4-barrel

Compatibility

Application Data
  • UniversalYes
    UsageCircle Track
  • UniversalYes
    UsageDrag race

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