Holley Pro Series Carburetor - 390 CFM Four Barrel - Model 4150 HP

Holley Pro-Series HP Carburetors set the standards by which all competition carbs are judged. Built only for all-out performance, Pro-Series 4150 Carburetors perform like the more expensive "modified" carburetors at a considerably lower cost. To greatly improve air flow, airhorn and choke towers have been removed, venturi sections have been modified, and the through-holes have been machined to . 440". Improved main metering circuitry. Pro Series carbs have been fit with 4500 Dominator fuel bowls, high flow power valves, and accelerator pumps equipped with severe usage diaphragms. This four barrel carburetor flows 830 cfm and is hand-built by Holley technicians. Wet flow tested from idle to full throttle in simulated racing conditions. Features fully-contoured main body, redesigned metering blocks, and high flow needle and seat assemblies. NASCAR approved.

Holley has been the undisputed leader in fuel systems for over 100 years. Holley carburetors powered every NASCAR Cup team and nearly every NHRA Pro-Stock champion for four decades. Now, Holley EFI products power these cars and are dominating the performance world. Holley products for GM's popular LS engine are dominating the LS scene as well. Holley's products also include performance fuel pumps, intake manifolds and engine dress-up products for street performance, race and marine applications. As a single solution or partnered with products from other Holley companies we can give you the edge you need over the competition!