Holley EFI Hi-Ram Intake Manifold Base 300-243BK
Holley EFI Hi-Ram Intake Manifold Base 300-243BK Holley EFI Hi-Ram Intake Manifold Base 300-243BK Holley EFI Hi-Ram Intake Manifold Base 300-243BK Holley EFI Hi-Ram Intake Manifold Base 300-243BK Holley EFI Hi-Ram Intake Manifold Base 300-243BK Holley EFI Hi-Ram Intake Manifold Base 300-243BK

Holley EFI Hi-Ram Intake Manifold Base 300-243BK

$679.99 ea
Condition: NEW
Availability:Backordered until 08/30/2021
Out of stock at HOLLEY PERFORMANCE PRODUCTS as of 08/03/2021
Supplier has not provided any fitment data for this product.
Shipping Note:Standard Delivery

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Muscle Cars & Classics always recommends professional installation of our products. Buyer assumes risk of damage caused by improper installation.

The Hi-Ram manifold line has a new addition for the 351W Ford application. The runner length and tapered cross section design will perform well for a wide range of engine combinations. The engineering team also redesigned the water crossover passage to allow room for distributor phasing. Aggressive, bold, race–bred styling will make bad intentions clear for drag race, muscle car, marine, off–road, sandrails, pulling trucks, track, street–rod applications and more!
  • EFI Fuel Rails Are Machined For -8AN O-Ring Fittings
  • With Passages Large Enough To Accommodate High Fuel Flows
  • Plenum Top Gasket Type-3/32 in. Round O-Ring Cord
  • Manifold is Designed For A 9.5 in. Deck Height
  • Requires The Use of Holley EFI Dual Sync Distributor PN 565-111
Installation Notes:
*** For carbureted applications you can use MSD PN 85787 Ford 351W Distributor with Steel Gear *** The front and rear height measurements listed in the Specs section are referencing the overall height with the top plate installed. Please see the diagrams in the product images for other dimensions. Warning: Many Ford vehicle models were originally equipped with a heater core flow restrictor located at either the original heater hose fitting in the factory intake or inline in the inlet heater hose which protects the heater core from damage. If you are replacing the hoses between the engine and heater core or changing the factory fitting check to see if your application requires a flow restrictor. Failure to use the proper flow restrictor will likely result in a damaged or leaking heater core.
About Holley Performance Products

Holley has been the undisputed leader in fuel systems for over 100 years. Holley carburetors powered every Monster Energy NASCAR Cup team and nearly every NHRA Pro-Stock champion for four decades. Now, Holley EFI products power these cars and are dominating the performance world. Holley products for GM's popular LS engine are dominating the LS scene as well. Holley's products also include performance fuel pumps, intake manifolds and engine dress-up products for street performance, race and marine applications. As a single solution or partnered with products from other Holley companies we can give you the edge you need over the competition!


Download Name File Size


Construction Cast
Emission Code 3
Engine Ford 351W
Engine Make/Size Ford 351W
Finish Black
Fuel System Type Carb
Manifold Type Hi-Ram
Part Type Engine Intake Manifold
Port Size 2.00" x 1.190"
RPM Power Band 1500-7000
RPM Range 1500-1700
Usage Street/Strip

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