Holley EFI Hi-Ram Intake Manifolds 300-963-120K

Name: Holley EFI Hi-Ram Intake Manifolds
Brand: Holley
SKU: HLY-300-963-120K
Price: 1849.95 USD
Availability: InStock
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Part Number: HLY-300-963-120K

$1,849.95

Holley EFI Hi-Ram Intake Manifolds

Intake Manifold, 102mm Throttle Body, 120 lbs./hr. Injectors, EFI Hi-Ram, Aluminum, Natural, Rectangle Port, Chevrolet, Big Block, Kit
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Holley EFI Hi-Ram Intake Manifolds 300-963-120K

HLY-300-963-120K

Not Yet Reviewed

Part Number: HLY-300-963-120K

Estimated Ship Date from Texas: Monday 10/19/2026

$1,849.95

Overview

Applications

Q&A

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Overview

Brand:

Holley

Manufacturer's Part Number:

300-963-120K

Part Type:

Intake Manifolds, Fuel Injected

Product Line:

Holley EFI Hi-Ram Intake Manifolds

Summit Racing Part Number:

HLY-300-963-120K

UPC:

810224691553

Cylinder Head Configuration:

Rectangular Port

Fuel Injection Style:

Multi-port

Basic Operating RPM Range:

1,500-8,000

Intake Section Included:

Complete

Throttle Body Bore Size:

105mm

Engine Block Deck Height:

Standard deck

Injectors Included:

Yes

Multi-Port Fuel Rails Included:

Yes

EGR:

Aftermarket Fuel Rail Required:

Yes

Throttle Body Included:

Yes

Supplemental Bosses Cast-In:

Supplemental Bosses Machined:

Runners Included:

Yes

Runners Removable:

Plenum Material:

Aluminum

Plenum Finish:

Natural

Base Material:

Aluminum

Base Color:

Natural

Remanufactured:

Quantity:

Sold as a kit.

Notes:

Kit includes 120 lb/hr injectors. Longitudinal plenum top with fuel rails machined for -8 AN O-ring fittings.

Holley EFI Hi-Ram Intake Manifolds

Holley offers EFI Hi-Ram intake manifolds for a variety of applications, including many vehicles from the 1950s, '60s, '70s, and '80s with a Chevy small block Gen I engine. Fuel rail kits are provided and have mounting for both long and short type fuel injectors. These manifolds offer the performance potential and the appearance of professionally prepared billet and fabricated racing intake manifolds at the affordable price of a cast-aluminum product. They deliver 21st century performance for the iconic small-block Chevy engine.

* Model 300-950 is of standard Hi-Ram configuration with a "top-feed" plenum and a plenum top designed to accept up to an 105mm Gen IV LS 4-bolt throttle body, including drive-by-wire throttle bodies.

* Model 300-951 is a hood-height friendly Hi-Ram variation which has a "front-feed" plenum and a forward-facing throttle body flange which accepts an up to 95mm LS 4-bolt throttle body, also, including DBW throttle bodies. It's an upgrade replacement for the Holley/Weiand Stealth-Ram intake manifold which was a popular manifold used to significantly improve the performance of 1985-92 GM 5.7L TPI fuel-injected engines. The 300-951 system installs under the OE hood for Gen 1, 2, and 3 Camaros and Firebirds. It should be compatible with most applications with a mild cowl induction hood.

* Uses drive-by-wire or cable-actuated GM Gen IV LS 4-bolt throttle bodies
* Throttle cable bracket is supplied in the kit
* GM Gen IV LS MAP sensor port. Also has provisions for (1) 1/8 NPT, (1) 1/4 NPT, (1) 3/8 NPT fittings to the plenum
* Power band: 1,500-8,000 rpm
* Black anodized EFI fuel rails are machined for -6 AN O-ring fittings and come included with these EFI Hi-Ram kits
* Plenum top gasket type – 3/32 in. round O-ring cord
* Cast 356-T6 aluminum construction, natural, satin as-cast aluminum finish
* Requires the use of early type GM or small cap MSD or Holley distributors. Not compatible with HEI distributors
* 1.95 in. tall x 1.25 in. wide port flange openings