Holley EFI Intake Manifold 4150 Flange Rectangle Port Head Big Block V8 Chevy

Prep your Big Block V8 Chevy for its switch to EFI by investing in this intake manifold from Holley (300-563). Provided that you’re using rectangular port heads, this manifold is a superb match for your high-performance engine. It’s compatible with 4150-style carburetors and, thanks to its power band, it operates between 3500 to 8000 RPM. An open plenum, single-plane design makes it possible, which is dyno-proven to make more horsepower and torque than other manifolds.

Features and Benefits:
- Ideal for Converting High Performance BBC V8 to EFI
- Designed for Rectangular Port Heads
- 4150 Carburetor Mounting Flange
- 3500-8000 RPM Power Band
- Dyno-Proven Horsepower & Torque Gains
- Open Plenum, Single-Plane Design
- Great for Hardcore Drag Racers
- Fuel Rails are Anodized & Laser-Etched
- Includes 2 Sets of Mounting Brackets
- Works with 1.48” or 2.56” O-Ring-to-O-Ring Injector Lengths
- Free of EGR Provisions

Holley engineered this manifold as the perfect complement to hardcore drag racers like NHRA Super Comp, Super Gas, and Street classes. It’s equally potent with IHRA Quick Rod, Super Rod, and Hot Rod applications. Two sets of mounting brackets come with the manifold which allow users to pair them with either 1.48” or 2.56” O-ring-to-O-ring injector lengths. Fuel rails that are anodized and laser-etched complete the package.

Specifications:
- Rectangle Port Dimensions: 2.28” Tall x 1.48” Wide
- Front & Rear Height: 5.96”

Vehicle Fitment:
- 1960-1987 Chevy C10
- 1988-1998 Chevy/GMC C/K