Performance Carburetor 390CFM 4160 Series

The Performance Carburetor 390CFM 4160 Series by Holley is a premium four-barrel carburetor designed for street performance and moderate racing applications. Built for builders and enthusiasts who demand reliable fuel delivery without the complexity of fuel injection, this carburetor sits at the sweet spot between stock efficiency and high-revving aggression. Whether you're upgrading a classic muscle car, restoring a vintage hot rod, or tuning a street performance engine, the 390 CFM rating provides excellent atomization and response across the RPM band, making it an ideal choice for engines in the 250–400 horsepower range.

The 4160 series architecture delivers consistent performance through Holley's proven dual-inlet, four-stage fuel delivery system, which meters fuel precisely as engine load changes. The 390 CFM specification balances airflow capacity with throttle response sensitivity—high enough to support moderate boost or larger displacement naturally aspirated builds, yet responsive enough for street driving without flat spots or bog. Secondary barrels open progressively as manifold vacuum drops, ensuring smooth transitions between cruise and acceleration phases. The robust aluminum casting and precision-machined components withstand thermal cycling and vibration, while the integrated float bowl design minimizes fuel slosh and maintains consistent fuel level across hard cornering and acceleration events.

This carburetor performs best on engines with modest to moderate cam timing and heads that support efficient fuel mixing without excessive air velocity restrictions. Bolt-hole spacing and flange diameter conform to standard American V8 intake manifolds, making installation straightforward on Chevy, Ford, Mopar, and Pontiac platforms from the 1960s through modern vintage-style builds. Tuning flexibility—adjustable air-fuel mixture screws, idle air bleeds, and power valve options—allows fine-tuning to match your specific engine combination and fuel octane. Weighing 9.1 lbs and measuring 11.1 × 7.8 × 12.3 inches, it fits within typical under-hood clearance on most street rods and muscle car conversions, making it a practical upgrade for builders seeking reliable, rebuildable carburetor performance.