This Holley Hi-Ram intake plenum top comes in a blank-flange configuration finished in black ceramic coating, letting builders machine a custom throttle body opening to match their own induction setup. It's constructed of cast aluminum and bolts on from the top down through the intake base.
Specifications:
- Category: Air and Fuel Delivery
- Construction: Cast Aluminum
- Finish: Black
- Manifold Type: Hi-Ram
- Flange Configuration: Blank Flange
- Product Type: Intake Manifold Top
- A-B Height (w/Carb Style Top): 12.10\"
- Height at Plenum Flange: 9.44\"
- Warranty: Manufacturer's Limited 90 Day Warranty
- Part Number: 300-208BK
Fits Holley Hi-Ram manifold bases. Also available in the dual 4150 throttle body pattern for builders who don't need a custom flange.
Compliance: This part is legal for sale and use on Racing Use Only Vehicles — competition vehicles that are not registered and never operated on the street. It is against the law to install this part on an Emissions Controlled Vehicle (1966-and-newer California-certified or 1968-and-newer federally certified vehicles).
FAQ
What does the 300-208BK plenum top fit?
It fits Holley Hi-Ram intake manifold bases as a bolt-on top plate.
What flange configuration does this top use?
A blank flange, designed for a custom-machined throttle body opening.
What's it made of?
Cast aluminum, finished in black ceramic coating.
Is this part legal for street use?
No — it's Racing Use Only and cannot legally be installed on an emissions-controlled street vehicle.
