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    Holley Hi-Ram Plenum Top Only, Blank Flange, 3500-8000+ RPM | 300-208

    Vendor: Holley EFI
    Part Number: 300-208
    Save $39
    Sale Price $311.95 Regular Price $350.95

    Currently out of stock.

    Not sure it fits your vehicle?
    Email sales@berryperformancesales.com with your year, make, model and engine, and we'll help you check fitment before you order.
    Fast Fulfillment: In-stock orders typically ship within 1 to 2 business days.
    Free Shipping on Orders Over $99 | Excludes freight shipments
    International Shipping Available: email sales@berryperformancesales.com for a quote.
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    This Hi-Ram plenum top only comes with a blank flange, designed to fit Holley Hi-Ram manifolds as a foundation for custom fabrication or EFI conversions.

    Specifications:

    • Manifold Type: Hi-Ram plenum top, blank flange
    • Construction: Cast aluminum, satin finish
    • RPM Power Band: 3,500-8,000+
    • Height at Plenum Flange: 9.44"
    • A-B Height (w/ carb style top): 12.10"
    • Sealing: O-ring seals for plenum top
    • Part Number: 300-208

    Designed for use with Bosch-style EV-1 or GM LS7 fuel injectors on Hi-Ram intake manifolds with port EFI provisions.

    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 300-208 include?

    A Hi-Ram plenum top only, with a blank flange for custom fabrication.

    What Hi-Ram manifolds does it fit?

    Holley Hi-Ram manifolds using the modular removable-top design.

    What injectors is it designed to accept?

    Bosch-style EV-1 or GM LS7 fuel injectors when used with port EFI provisions.

    Is this part street legal?

    No. It's legal for sale and use only on Racing Use Only vehicles that are never registered or operated on the street.

    Shipping Policy
    • Free shipping on orders over $99 (excludes freight shipments).
    • In-stock orders typically ship within 1 to 2 business days. Weekend and holiday orders are processed the next business day.
    • Orders ship from Defiance, Ohio and a nationwide network of warehouses and manufacturers.
    • Items showing an ETA are not in stock yet. ETAs come from the manufacturer and can change.
    • No P.O. Boxes. International orders need a shipping quote, so email us first.

    Read the full Shipping Policy

    Return Policy
    • 30-day return window from the ship date. Returns must be approved first; email sales@berryperformancesales.com with your order number.
    • Items must be unused, complete and in the original packaging.
    • A 20% restocking fee applies, and return shipping is paid by the buyer.
    • Not returnable: installed or modified parts, opened or used programmers and tuners, custom orders, Open Box, and Clearance or Final Sale items.
    • Damaged, defective or incorrect items must be reported within 48 hours of delivery with photos.

    Read the full Return Policy

    Disclaimer

    All products are sold for off-road use only unless otherwise specified. Buyer assumes all responsibility for installation and operation. Seller is not liable for any incidental, indirect, or consequential damages — including engine failure, labor costs, or vehicle downtime — resulting from the use of any product sold.

    By making a purchase from Berry Performance Sales, you acknowledge and agree to abide by the terms and conditions of these Policies.

    For any questions or concerns, please contact us — we’re always happy to help.

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