The Speed Demon™ series is the most formidable performance street carburetor available today. It features the most advanced design manufacturing processes that provides street enthusiasts with racing carburetor technology in a very driveable package.

The Speed Demon™ line offers a wide range of sizes and in VE-series (vacuum secondaries, electric choke) or twin-squirter (mechanical secondaries) designs. Across the range of sizes, from 575 cfm to 850 cfm, the Speed Demons deliver balanced, high-velocity airflow and exceptional fuel metering capacity to match the fuel requirements most street engines.

A Speed Demon™ carburetor is ideal for muscle cars, stock rebuilds, tow trucks, mild performance applications and crate motors. They are designed for engines with cam profiles between 220 and 240 degrees duration at 0.050".

The walls and contours of the choke tower are smooth and free-flowing, designed to maximize air flow.

The new Idle-Eze™ Baseplate eliminates the need to drill holes in your carburetor's butterflies, or other modifications to obtain the proper idle speed and transition response. It provides a quick and easy way to acquire the best idle quality, throttle response, and driveability.

Valve is easily accessed with a screwdriver through the air cleaner stud hole. Can be fine-tuned after the throttle shaft position has been set.

CNC-machined metering blocks from billet aluminum prevent porosity and variations in the metering circuits

480 to 540 big block Crate Motors