The Q-850-B2 Q-Series Carburetor is engineered for forced induction drag racing applications. With 850 CFM of airflow and a square bore 4150 flange, it is ideal for dual-carburetor draw-thru supercharger setups. Its lightweight aluminum main body is precision machined for consistent throttle response and features billet metering blocks and a billet aluminum throttle body for strength and tunability. Dual fuel bowls include sight glass windows for fast float checks, and the 4-corner idle system ensures stable idle under variable load. The carb is pre-configured for gasoline and includes notched floats and secondary jet extensions to manage fuel during hard launches.

Quick Fuel Q-850-B2 Features:

• 850 CFM 4-barrel with mechanical secondaries
• Designed for dual 2x4 draw-thru supercharger systems
• 4150 square bore flange
• No choke tower
• Billet metering blocks with changeable channel restrictions
• 4-corner idle for drag racing stability
• Aluminum bowls with dual sight glass
• Billet throttle body with PTFE-coated shafts
• Down-leg boosters
• Primary jets: 68, secondary jets: 76
• 6.5 power valve, 32 pump nozzles
• Red anodized billet components

Emissions Note:

This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

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