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 system. The plenum tops are constructed of cast aluminum.
*This semi-gloss ceramic coating matches 300-113BK, 300-226BK, 300-229BK, and 300-243BK base part numbers.
Features:
- Modular Design w/ Removable Top
- A-B Height: 12.10Ó (w/ Carb Style Top - 2 x 4150 or 2 x 4500) Ð See Drawing
- Height at Plenum Flange: 9.44Ó
- O-Ring Seals for Plenum Top
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