Best Circle Track Carburetor: Compare 8 Track-Focused Options

#1 · Best Overall

1. ProForm 67215 Race Series

• Weight: 9 lb

Best for: 750 CFM Circle-Track Tuning.

Why it ranks #1: Its Circle Track Series design pairs 750 CFM with mechanical secondaries, dual inlets, molded wedge floats, and a secondary-side power valve.

A 750 CFM rating paired with dual inlets and mechanical secondaries gives the ProForm 67215 a clear circle-track focus. Its molded wedge floats are specified to keep fuel flowing, while changeable operating links let a builder alter linkage behavior for a particular setup.

Billet metering blocks and a billet throttle base plate provide named components for a race-oriented carburetor, while PTFE-plus bearing ribbons around the throttle shafts address the shaft interface. Molded wedge floats are described as helping keep fuel flowing, a relevant feature for circle-track use. The power valve sits on the secondary side, and changeable operating links support linkage adjustments. Its square-bore, four-barrel, 750 CFM specification helps buyers assess the layout and airflow class against their engine setup.

Skip it if you need a 650 CFM gasoline carburetor; the ProForm 67199-CT is specifically listed for circle-track gas use.

Choose this ProForm for a circle-track build seeking a 750 CFM, four-barrel layout with mechanical secondaries and adjustable operating links. Its rating and square-bore format are important boundaries to weigh against your engine and intended setup.

Listed on Amazon as: Proform 67215 Race Series 750 CFM Circle Track Dual Inlet 4-Barrel Square Bore Mechanical Secondary Carburetor with Molded Wedge Floats

#2 · Best Feature-Rich 750 CFM

2. Holley 4150 Ultra XP

• Weight: 9.2 lb

Best for: Adjustable 750 CFM Race Setup.

Why it ranks #2: This 750 CFM circle track model lists adjustable metering blocks, bowl sight windows, and airflow-focused venturi and air-bleed design.

Clear sight windows on both fuel bowls make fuel-level adjustments visible on the Holley 4150 Ultra XP without relying on an unseen bowl level. Its 750 CFM rating, outward-moved air bleeds, and circle-track designation position it for builders seeking an adjustable high-performance carburetor.

The sight windows on both bowls support visible fuel-level adjustment, a practical aid when setting up the carburetor. Outward-moved air bleeds are specified to smooth airflow transition from the carburetor top into the venturi, while the contoured venturi inlet is intended to balance airflow. Holley also lists improved durability, true gasket sealing, and fully adjustable metering blocks. Together, these details suit a race builder who wants accessible adjustment points and a 750 CFM, 4150-format unit.

Skip it if you want a 500 CFM, two-barrel gasoline race carburetor; Holley 0-4412CT is listed in that configuration.

This Holley suits race builders who value visible bowl-level checks, adjustable metering blocks, and a 750 CFM 4150 layout. The airflow rating and 4150 configuration remain key considerations when matching it to an engine.

Listed on Amazon as: Holley 4150 Alum Ultra Xp 750 Cfm Circle Track

#3 · Best 650 CFM Gas Option

3. ProForm 67199-CT

• Weight: 14.4 oz

Best for: 650 CFM Gas Circle Track.

Why it ranks #3: It is specifically identified as a 650 CFM circle track gasoline carburetor with mechanical secondaries, suiting buyers who want a lower listed capacity than 750 CFM.

A gasoline fuel designation distinguishes the ProForm 67199-CT, which combines a 650 CFM rating with mechanical secondaries for circle-track use. Those three named specifications make it straightforward to compare with the same brand's alcohol and E85 options.

The 650 CFM rating identifies the carburetor's listed airflow class, while the gas designation distinguishes it from ProForm's separately listed alcohol and E85 circle-track models. Mechanical secondaries describe its specified operating layout. These details help buyers narrow a selection by fuel and secondary type, but the supplied information does not specify tuning adjustments, float design, or other construction features, so those points cannot be used to distinguish its setup further.

Skip it if you need an E85-designated 750 CFM carburetor; ProForm 67200-CTE lists that circle-track configuration with mechanical secondaries.

This ProForm suits circle-track buyers seeking a 650 CFM gasoline carburetor with mechanical secondaries. Its stated fuel type and airflow rating are the central fit considerations; additional tuning and construction details are not provided.

Listed on Amazon as: ProForm Carburetor 650CFM Circle Track Gas Mech. Sec.

#4 · Best Quadrajet Option

4. Jet 35004 Quadrajet

• Weight: 0.27 g

Best for: High-RPM Quadrajet Racing.

Why it ranks #4: Built exclusively for circle track racing, it specifies a 0.149 needle and seat and a richer fuel curve throughout the RPM range.

A 0.149 needle and seat is the concrete fuel-delivery feature on this Jet Performance Quadrajet, which is specified for circle-track racing. Its richer fuel curve across the RPM range gives racers a distinct calibration approach, with high-RPM fuel flow called out as a priority.

Jet Performance states that this Quadrajet is built exclusively for circle-track racing and balanced to assure high-RPM fuel flow. The included 0.149 needle and seat is specified to ensure adequate fuel flow, while the richer fuel curve extends throughout the RPM range, particularly at wide-open throttle. Those traits make the carburetor relevant to racers seeking the listed calibration. The stated easy, quick installation is also useful when planning a replacement, though the supplied details do not give a CFM rating.

Skip it if you need a stated 750 CFM rating; ProForm 67215 Race Series lists that capacity alongside its circle-track features.

This Jet is for circle-track racers seeking a Quadrajet with a richer fuel curve and specified high-RPM flow. Buyers who need to select by CFM should note that no airflow rating is provided in the supplied details.

Listed on Amazon as: JET 35004 Circle Track Quadrajet Carburetor

#5 · Best 500 CFM Two-Barrel

5. Holley 0-4412CT 2300

• Weight: 5.9 lb

Best for: 500 CFM Two-Barrel Racing.

Why it ranks #5: Its 500 CFM, two-barrel design is explicitly circle track calibrated for gasoline and lists screw-in air bleeds.

Circle-track gasoline calibration is the defining feature of the Holley 2300 Series 0-4412CT, pairing a 500 CFM rating with a two-barrel layout. Screw-in air bleeds provide a specified adjustment feature for race-engine builders choosing a more compact carburetor format.

The 500 CFM capacity and two-barrel 2300 Series layout identify this as a different airflow and barrel configuration from four-barrel choices. Its circle-track calibration is specified for gasoline, so the stated fuel application is clear when narrowing options. Screw-in air bleeds offer an identified tuning feature, while the manual choke is part of the listed configuration. The Holley flange and Ford AT kickdown are also named details buyers can use when assessing installation requirements.

Skip it if you need a 750 CFM four-barrel; Holley 4150 Ultra XP is listed with that capacity and layout.

Consider this Holley for a gasoline circle-track engine whose setup calls for a 500 CFM two-barrel and screw-in air bleeds. Its two-barrel format and manual choke are specific configuration points to account for.

Listed on Amazon as: Holley (0-4412CT) 2300 Series Race Carburetor

#6

6. ProForm 67200-CTE

Best for: 750 CFM E85 Circle Track.

Why it ranks #6: This is a 750 CFM circle track model with mechanical secondaries, specifically identified for E85 rather than a general gasoline application.

E85 designation separates this ProForm 67200-CTE from the brand's gas and alcohol listings, while its 750 CFM rating sets its airflow class. Mechanical secondaries complete the stated circle-track configuration for builders choosing by fuel type and secondary operation.

The product is identified as a 750 CFM circle-track carburetor for E85, giving buyers two specific selection points before installation planning. Mechanical secondaries define its operating configuration, another useful distinction when comparing race setups. The supplied specifications do not name additional adjustment, float, or metering features, so the available decision basis is the E85 designation, 750 CFM capacity, and mechanical-secondary layout rather than undocumented construction details.

Skip it if you need a gasoline circle-track carburetor; ProForm 67199-CT lists gas fuel at 650 CFM with mechanical secondaries.

Select this ProForm for a circle-track setup specifying E85, 750 CFM, and mechanical secondaries. Fuel designation is the critical boundary; the supplied information does not detail further tuning features or construction.

Listed on Amazon as: ProForm Carburetor 750CFM Circle Track E85 Mech. Sec.

#7

7. ProForm 67199-CTA

• Weight: 6 lb

Best for: 650 CFM Alcohol Circle Track.

Why it ranks #7: It is a 650 CFM circle track carburetor with mechanical secondaries for alcohol, making it relevant when the engine is set up for that fuel.

Alcohol fuel application is the defining choice in this ProForm 67199-CTA, a 650 CFM circle-track carburetor with mechanical secondaries. That combination gives buyers a clear starting point when selecting by fuel type, airflow rating, and secondary operation rather than by a broad, unspecified application.

The title identifies this carburetor as a 650 CFM circle-track model for alcohol, so buyers can distinguish its stated fuel application from gasoline and E85 listings. Mechanical secondaries are also part of the named configuration, informing builders choosing how the carburetor's secondary side operates. The supplied product information does not give further construction or tuning details, so the strongest practical comparison points here are the specified fuel, capacity, and secondary type.

Skip it if you need a gasoline-designated 650 CFM model; ProForm 67199-CT lists circle-track gas and mechanical secondaries.

Choose this ProForm when your circle-track setup calls for an alcohol-designated 650 CFM carburetor with mechanical secondaries. Its stated fuel application is the main fit boundary; the supplied details do not specify additional tuning or construction features.

Listed on Amazon as: ProForm Carburetor 650CFM Circle Track Alcohol Mech. Sec.

#8

8. Bous Performance BPE-4502

Best for: Small-Block 350 CFM Two-Barrel.

Why it ranks #8: The 350 CFM two-barrel is listed for circle or oval track use, but the generic listing provides fewer race-specific calibration details than the dedicated options.

A 350 CFM, two-barrel configuration is specified for this Bous Performance carburetor, with small blocks named as its intended fit. Its manual choke and center-hung float add concrete configuration details for buyers comparing a compact gasoline circle-track or oval-track setup.

The stated 350 CFM capacity and two-barrel, four-bolt flange define the basic layout for installation planning, while the listing identifies the carburetor as suitable for small blocks. A manual choke gives the driver direct choke operation, and the center-hung float is a named internal feature. Its gasoline specification, aluminum and zinc material description, and zinc-plated finish provide further identification when checking the build requirements and replacement configuration.

Skip it if you need a 500 CFM gasoline race carburetor; Holley 0-4412CT offers that rating in a circle-track two-barrel.

This Bous Performance carburetor fits buyers seeking a 350 CFM gasoline two-barrel with manual choke for a small-block setup. Its capacity and four-bolt flange are the key boundaries to check against the intended installation.

Listed on Amazon as: 2 Barrel 350 CFM Mechanical Carburetor Compatible with Circle Oval Track Zinc BPE-4502