Engine & Performance Warehouse 3519QFT 650 CFM 4-Barrel Double Pumper Carburetor

The 3519QFT is a 650 CFM 4-barrel double pumper carburetor distributed by Engine & Performance Warehouse, featuring a mechanical secondary design engineered for high-performance street and strip applications. Built on the proven Holley-style 4150 platform, this carburetor delivers responsive throttle feel and consistent fuel delivery under demanding conditions.

Key Features:

• 650 CFM airflow rating — ideal for small- to mid-displacement performance V8 engines
• Double pumper (mechanical secondary) design for immediate throttle response and aggressive acceleration
• 4-barrel, 4150-style configuration with dual accelerator pumps for crisp off-idle and wide-open-throttle performance
• Compatible with standard square-bore intake manifolds
• Adjustable idle mixture screws and replaceable main jets for easy tuning
• Aluminum main body construction for reduced weight and corrosion resistance
• Compatible with manual choke or electric choke conversion kits

The 3519QFT is a proven choice for enthusiasts building a performance street engine, bracket racer, or weekend warrior looking for reliable, tunable carburetion without the complexity of EFI. It is designed to bolt directly onto standard square-bore 4150-flange intake manifolds commonly found on small block and big block V8 applications.