ATM 850HP Double Pumper Street Strip Series Pump Fuel Carburetor

Meet the ATM XRSC Series’ most affordable race carburetor crafted for street/strip builds. The ATM 850HP Double Pumper Street Strip Series Pump Fuel Carburetor delivers race-level capability with a price-conscious design, providing dependable performance without the premium cost of billet components.

All-aluminum construction comes standard: ATM die cast aluminum main bodies, metering blocks, and throttle bodies deliver durability and consistent tuning under demanding street and strip conditions. Dual inlet, dual site-window fuel bowls with 7/8"-20 inverted flare inlets offer versatile fuel delivery and easy inspection access so you can dial in fuel flow with confidence.

• Extensive tuning options: changeable idle and high-speed air bleeds, plus adjustable idle feed and power valve channel restrictions for precise metering across a wide range of conditions.
• Throttle bodies equipped with vacuum tubes for vacuum advance and PVC hookups, enabling reliable ignition control and emissions-friendly operation.
• Factory-calibrated and “race-ready” out of the box, with only minor trim required to match atmospheric conditions and your specific race combo.
• Precise idle control: 4-corner idle adjustment for dependable idle quality at varying engine strengths and gearing.
• Finish: Polished silver for a showroom-grade under-hood appearance that resists show-of-age wear on daily drivers and track days alike.
• Flange and compatibility: designed for 4150-style manifolds, available in 650, 750, 850, 950 and 1050 CFM sizes to suit a range of street/strip applications.

Key specs at a glance: 850 CFM capacity, 4150 flange, four vacuum tubes in the throttle body. This carburetor mirrors the functionality of high-end race carbs while keeping costs down, making it a practical choice for builders who want tunable performance without breaking the bank.

If you’re constructing a street/strip setup that demands reliable, tunable performance with straightforward maintenance, the ATM XRSC 850 CFM carburetor offers a balanced mix of precision, adaptability, and value.