625CFM Street Demon Carburetor

The DEMON CARBURETION 625 CFM Street Demon Carburetor (Model 1901) is a modern four-barrel street performance carb engineered for reliable, consistent fuel delivery in high-demand driving conditions. Built for enthusiasts and mechanics who require precision fuel metering without the complexity of electronic fuel injection, this carburetor delivers the responsiveness and simplicity that made carbureted engines legendary in both muscle car and off-road platforms. The spread-bore design ensures optimal airflow efficiency across the full RPM spectrum, making it ideal for street-driven vehicles that demand both cold-start reliability and throttle response.

This 625 CFM unit features an electric choke mechanism for quick, automatic enrichment during cold starts, eliminating manual choke manipulation and the guesswork of traditional designs. The vacuum secondary system intelligently meters fuel to secondary venturis only when engine load demands it, preventing rich running at cruise and maximizing fuel economy during normal operation. The single inlet design simplifies installation and reduces fuel line complexity, while the burnished and black finish resists corrosion in marine, off-road, and high-moisture environments. Constructed to OEM tolerances with quality internal passages and calibrated jets, the Street Demon delivers consistent performance across a wide range of engine combinations.

Mechanics, restorers, and performance enthusiasts benefit most from the Street Demon's proven reliability in both daily driver and weekend warrior applications. Installation requires a square-bore or spread-bore intake manifold compatible with four-barrel carburetor standards; verify your intake configuration before ordering. The carburetor's compact footprint (8.75 x 7.25 inches) fits tight engine bays without requiring radical hood modifications. For those rebuilding classic vehicles, converting from fuel injection, or upgrading from worn OEM carburetors, the Street Demon provides straightforward tuning and serviceability—jets, gaskets, and internal components remain readily available from any quality carburetor shop.