Fits Holley Hi-Ram Manifolds-Holley has launched new black ceramic coated plenum tops to match our Hi-Ram manifold bases!
They are available in the dual 4150 throttle body pattern or in a full blank top so that you can design your our system. The plenum tops are constructed of cast aluminum.
They are available in the dual 4150 throttle body pattern or in a full blank top so that you can design your our system. The plenum tops are constructed of cast aluminum.
Features
- Single plane design with isolated plenum for cooler charge air temperatures
- 4150 square bore mounting flange
- Power band: 2500-7500 RPM
- Height: front 5.58”, rear 6.40”
- Port size: 1.82” height, 1.04” width
- Extra material allows for porting to 2.00” height, 1.20” width
- Anodized aluminum fuel rails with laser-etched logo (EFI model) 6AN
- Includes fuel rail mounting brackets in two sizes for more options in fuel injectors (EFI Model)
- Accessory ports under the carburetor in 1/8 NPT, 1/4 NPT and 3/8 NPT sizes
