Carburetors & Accessories

At DaVinci Performance Carburetor ... We Make Horsepower! Our engineers aim to lead the industry in the research and development of fuel induction systems for products that exhibit maximum horsepower, engine efficiency, and environmental viability. You will find the very best workmanship in our custom carburetor modifications. Our promise to you is an out-of-the-box carburetor that will need minimal tuning.

• DaVinci Racing New Modified Holley 4412 Carburetor
• Custom designed and modified for Circle Track Racing
• Aluminum with polished finish for great look
• Accelerator system modified to provide sharp dependable throttle response and prevent overfueling at higher RPM
• Includes Gaskets
• Fuel Type: Gasoline
• CFM: 500 CFM
• Choke Type: Manual
• Flange Type: 2-Barrel 4-Bolt
• Ready to run out of the box

#NOTE: Due to the California Air Resources Board (CARB) restrictions, we no longer ship carburetors to the state of California.

At DaVinci Performance Carburetor ... We Make Horsepower! Our engineers aim to lead the industry in the research and development of fuel induction systems for products that exhibit maximum horsepower, engine efficiency, and environmental viability. You will find the very best workmanship in our custom carburetor modifications. Our promise to you is an out-of-the-box carburetor that will need minimal tuning.

• DaVinci Racing New Modified Holley 4412 Carburetor
• Custom designed and modified for Circle Track Racing
• Aluminum with polished finish for great look
• Accelerator system modified to provide sharp dependable throttle response and prevent overfueling at higher RPM
• Includes Gaskets
• Fuel Type: Gasoline
• CFM: 350 CFM
• Choke Type: Manual
• Flange Type: 2-Barrel 4-Bolt
• Ready to run out of the box
#NOTE: Due to the California Air Resources Board (CARB) restrictions, we no longer ship carburetors to the state of California.

• Rochester 2G Circle Track 500 CFM 2-Barrel Carburetor
• The JET 2G is IMCA approved
• Has a .135 needle and seat assembly for adequate fuel supply
• Small diameter float for maximum float bowl volume
• Cluster is modified based on engine and vehicle specs to keep the fuel curve correct throughout the RPM range
• Idle, transition and accelerator pump circuits are modified for circle track applications
• Tapped to accept Holley jets for ease of tuning and finished with a 3/8" fuel inlet
• Venture size: 1-3/8"
• Bore size: 1-11/16"
#NOTE: Due to the California Air Resources Board (CARB) restrictions, we no longer ship carburetors to the state of California.

• This carburetor shares the successful features of the original 7448, but with changes aimed directly at circle track cars
• Gold Dichromate finish for corrosion resistance and classic Holley looks
• Calibrated specifically for circle track use
• No choke for unobstructed airflow
• 30cc accelerator pump for additional fuel under initial acceleration
• HP metering block with changeable emulsion bleeds for infinite tenability
• Screw in air bleeds for precision tuning capabilities
• Welded throttle lever
• Power valve blow-out protection
• 100% wet-flow tested by Holley technicians to assure it arrives ready to run!
#NOTE: Due to the California Air Resources Board (CARB) restrictions, we no longer ship carburetors to the state of California.

• Q-Series Replacement for 4412 500 CFM Gauge Rule Circle Track
• Modified emulsion & wedge float
• Sportsman style gasoline carburetor
• Will pass most tech inspection depending on rules
• Please check with your sanctioning body before purchase
#NOTE: Due to the California Air Resources Board (CARB) restrictions, we no longer ship carburetors to the state of California.

• All aluminum construction - for nearly 50% weight savings over zinc version
• Tumble polished aluminum with Black™ billet metering block and base plate
• No choke tower for unobstructed airflow
• Air cleaner flange centered over venturii; 5/16-18 bent air cleaner stud included
• Down-leg boosters for improved fuel signal
• Internal pump passage on metering block equipped with tunable bleed off
• Same 1-3/8” Venturii & 1-11/16” Throttle Bore size and Throttle Plate/Throttle Shaft size of original 0-4412
• Clear sight windows on both sides of bowl for easy & safe fuel level adjustments
• -8 O-ring inlet threads offer plumbing options (come with an extended -8 O-ring to -8AN male adapter and -8 plug)
• 30cc pump with metal lever and anti-siphon valve
• Dedicated race-only throttle lever
• Knurled curb idle screw allows for easy idle adjustment
• Set screw for wide open throttle stop adjustment
#NOTE: Due to the California Air Resources Board (CARB) restrictions, we no longer ship carburetors to the state of California.

• Gold Dichromate finish for corrosion resistance and classic Holley looks
• Performance upgrade for stock to mildly modified vehicles
• Universal calibration for easy bolt-on performance
• Manual choke (cable actuated - hand controlled) for precise cold start control
• Vacuum secondaries for use on wide variety of vehicles
• Single feed fuel inlet for easy installation
• Compatible with GM, Chrysler, and Ford A/T kickdown linkage; additional parts may be required
• Power valve blow-out protection
• 100% wet-flow tested by Holley technicians to assure it arrives ready to run!
#NOTE: Due to the California Air Resources Board (CARB) restrictions, we no longer ship carburetors to the state of California.

• All aluminum construction for nearly 50% weight savings over zinc version
• Hard Core Gray with Black™ billet aluminum metering block and base plate
• No choke tower for unobstructed airflow
• Air bleeds moved outward to allow a smoother transition of airflow
• Air cleaner flange centered over venturii for improved airflow; 5/16-18 bent air cleaner stud included
• Down-leg boosters for improved fuel signal
• Same 1-3/8” Venturii & 1-11/16” Throttle Bore size and Throttle Plate/Throttle Shaft size of original 0-4412
• Clear sight windows on both sides of bowl for easy & safe fuel level adjustments
• -8 O-ring inlet threads offer a variety of plumbing options (come with an extended -8 O-ring to -8AN male adapter and -8 plug)
• Throttle shaft rides in oil impregnated sintered bronze bushings for smooth throttle actuation
• 30cc pump with metal lever; anti-siphon valve in mainbody to reduce pump pull over
• Dedicated race-only throttle lever with all unnecessary street attachment points & tangs removed
• Set screw for wide open throttle stop adjustment
#NOTE: Due to the California Air Resources Board (CARB) restrictions, we no longer ship carburetors to the state of California.

• Holley 4150 Aluminum Ultra XP 750 CFM 4-Barrel Carburetor, Black
• Aluminum Construction (saves 4.5 lbs - 38% weight savings)
• Hard Core Gray with black anodized billet aluminum metering block and booster inserts
• Designed for use on Drag race, circle track, or any high horsepower engines
• Contoured venturri inlet offers balanced airflow for increased horsepower
• Dual 30cc accelerator pumps provide the perfect amount of fuel from idle to full throttle
• Clear sight windows on both sides of bowls for easy and safe fuel level adjustments
• -08 AN o-ring inlet threads offer a large variety of plumbing options
• 4 corner idle allows you to precisely control your idle system
• Elongated mounting holes allow fitment on intakes with square flange (4150 style) or large flange (Dominator style)
• Knurled primary and secondary curb idle screws allow for easy idle adjustment without the use of tools
• Primary throttle shaft capped to prevent entry of debris & contaminates
• Factory machined accessory mounting hole for easy addition of adjustable primary throttle stop
• Stainless steel adjustable secondary link
• Includes notched float and jet extensions
#NOTE: Due to the California Air Resources Board (CARB) restrictions, we no longer ship carburetors to the state of California.