Holley EFI Intake Manifold 4500 Flange Rectangle Port Head Big Block V8 Chevy

Ready your Big Block V8 Chevy for its shift to EFI by getting this intake manifold from Holley (300-564). This manifold is the ideal partner for 4500-style carburetors and rectangle port heads. It’s dyno-proven to make more horsepower and torque than other manifolds, so it excels with performance-driven applications. A single plane design is what brings it to life, boasting an open plenum for ample air supply. Plus, since it uses a power band that operates from 3500 to 8000 RPM, you can rest assured that it can handle your vehicle.

Features and Benefits:
- Ideal for Converting High Performance BBC V8 to EFI
- Designed for Rectangular Port Heads
- 4500 Carburetor Mounting Flange
- 3500-8000 RPM Power Band
- Dyno-Proven to Make More Horsepower & Torque
- 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

Free of EGR provisions, the manifold works like a charm with NHRA Super Comp, Super Gas, and Street classes. This extends to IHRA Quick Rod, Super Rod, and Hot Rod applications as well, making it great for hardcore drag racers in general. Users even get the option to use 1.48” or 2.56” O-ring-to-O-ring injector lengths because it comes with two sets of mounting brackets. As the finishing touch, the fuel rails are anodized and laser-etched for extra strength.

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