Proform Releases New Improved Race Series Carburetors

Fuel injection has been a popular upgrade for our classic Mopars. Although there are a lot of benefits, there can be a lot of disadvantages too. The good news is even though carburetors are older technology, companies like Proform are still working to make them better. Proform recently released their newest Race Series Carburetors with some big improvements.

Proform can not leave anything alone and decided that their already awesome Race Series carburetors needed some tweaking. The entire 650-1050 CFM Race-Series line features complete redesigns of the main bodies, throttle base plates, metering blocks, and fuel bowls. Now you are getting even more performance out of the box at a great price.

High-Flow Carburetor Main Body

The revolutionary Proform High-Flow Main Body is better than ever with newly contoured leading edges in the Venturi area to smooth inbound air for maximum velocity prior to mixing with fuel. Other new features included machined 2-step down-leg booster for better fuel/air mixing, and the air bleeds are further recessed into the Venturi wall for less interference.

Billet Metering Blocks

Billet aluminum metering blocks in Race-Series Purple or New Black anodized finish, have a new fuel bowl side baffle that integrates with the fuel bowl float to reduce fuel slosh and improves fuel retention lost due to inertia when taking corners or hard acceleration/deceleration. Additionally, pre-drilled emulsion channels to control air transfer to the main well for ultimate fuel/air tunability is a standard PROFORM feature.

Throttle Baseplates

The fully adjustable, multi-port, throttle base plate is constructed of solid billet aluminum alloy, so it will not warp. Standard slabbed throttle shafts with thinned butterflies and low-profile screws, reduces air resistance into the intake. It will also mate better with the intake manifold flange due to an enlarged surface area that has more strength and rigidity than previous versions. The primary and secondary throttle shafts are also compatible with different ratio linkages for increased tunability.

Center-Hung Aluminum Fuel Bowls

The all-aluminum fuel bowls, with sight glass windows and billet AN fittings for driver or passenger side fuel line connections, feature dual Nitrophyl floats. The new design reduces fuel turbulence with a lowered delivery ramp. More prominent internal fuel baffles control internal slosh by keeping fuel in the lowest area of the bowl during acceleration and cornering. Float adjustment requires only a screwdriver and 5/8-inch wrench.

New Design Features:
• Lightweight Aluminum High-Flow Carburetor Main Body – NEW DESIGN
• NEW Venturi Contoured Leading Edge:
Smoother Inbound Airflow
• CNC-Machined Smooth Mating Surfaces
• Easy-Change Air Bleeds for Precise Tuning
• Two-Step Down Leg Boosters for optimized
air fuel mixing


Billet Aluminum Metering Blocks
Race-Series Purple or NEW Black Anodized Finish
• NEW Additional Internal Baffling & Vent Whistle 
Tube: Fuel Control Better Fuel Retention
• NEW Additional Pre-Drilled Emulsion Channels:
Adjust Fuel/Air Mix



Billet Aluminum Throttle Base Plate
• NEW Slabbed Throttle Shafts with Low-Profile Screws
that Boost Combustion Efficiency
• Slip Link Mechanical Secondary Linkage
• Power Valve Blowout Protection
• Adjustable Secondary Air Flow Cam Bracket
• Serviceable Throttle Levers


Aluminum Center-Hung Fuel Bowls – NEW DESIGN
• 1. NEW Increased Internal Baffling: Better Fuel Control
• 2. NEW Lower Fuel Ramp: Less Fuel Turbulence
• NEW Dual Notched Nitrophyl Floats
• Easy View Sight Glass Windows & Billet AN Fuel 
Line Fittings


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Gavin Wollenburg

Editor – [email protected] Gavin grew up around Mopars in his lakeside home in Ohio, his father showing him nearly everything he needed to know about haulin' some serious rear in his '72 Dart Swinger. Since then, he's made his little A-Body a serious autocross contender and regularly shows the modern boys how an old Dart does it!