Holley now has plenum top options for those of us with limited room in the front of our engine bays. The side mount plenum tops resemble the older Ford EFI manifolds and will allow you to mount the throttle body on the side. This will allow for easier fabrication for boosted applications or for just a different look on your Hi-Ram manifold. Cast aluminum construction designed to mount on our existing Hi-Ram manifold bases. Available in a cast or black finish. Models for both LS and Ford 5.0 throttle body patterns in 95mm and 105 mm sizes.
- Designed For Side Mounted Throttle Bodies
- Allows Room For Designing Boosted Applications
- 4 mm Aluminum Construction
- 95 mm And 105 mm Sizes Available
Please see the diagrams in the product images for other dimensions.
***Lid has been verified to fit under Cervinis 2.5" cowl hood on 1979-1993 Mustangs with 351W & 302W Hi-Ram bases when using motor mounts that retain stock engine locations.
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!
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Holley EFI Hi-Ram Plenum 300-302: