650CFM Drag Race Carb.

The PROFORM 650 CFM Drag Race Carburetor is a purpose-built, high-flow four-barrel carb engineered for dedicated bracket and drag racing applications where consistent fuel delivery and repeatable jet response are non-negotiable. This 650 cubic feet per minute unit delivers the airflow capacity required for serious competition engines, with a square bore design that integrates with standard manifold inlets. The no-choke, mechanical secondary configuration ensures cold-start simplicity on the line and eliminates choke adjustment variables that compromise consistency across multiple qualifying and elimination rounds.

The dual inlet design accommodates fuel pressure from either feed line, reducing dependency on single-fuel-supply reliability during high-demand acceleration. Aluminum construction with purple anodized finish and tumble polish creates a corrosion-resistant, visually distinctive appearance while maintaining weight savings critical in competitive builds. The mechanical secondary operates independently of primary throttle input, allowing tuners to calibrate fuel curve and air response for specific track conditions and engine characteristics. At 9.38 lbs, the carb's weight footprint remains manageable for overall vehicle balance without sacrificing the robust internal metering necessary for drag strip repeatability.

This carburetor is sized and configured for small-block and certain mid-block drag engines operating in bracket racing classes where 650 CFM represents the efficiency sweet spot for throttle response and fuel atomization. Racers running carbureted competition platforms—whether bracket racing, heads-up, or bracket eliminator classes—depend on this carb's straightforward tuning window and predictable idle and cruise behavior between rounds. The PROFORM 650 CFM Drag Race Carburetor delivers the airflow and metering authority expected in oval-track and strip-specific fuel delivery systems.