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Holley EFI 300-122BK LS Hi-Ram EFI Intake Manifold Black LS1/LS2/LS6

Part of: Holley EFI LS Hi-Ram Intake Manifold

Other options in this family: Holley EFI 300-122 Holley EFI 300-123BK

Manufacturer

Picture for manufacturer Holley EFI

Part Number

300-122BK
9 reviews
Sale Price

$1,199.95

In Stock (10+)

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Usually delivered within 2 days

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Product Details

The Holley EFI LS Hi-Ram EFI Manifold delivers exceptional airflow and performance for GM LS1, LS2, and LS6 engines. This high-performance intake manifold features a sleek black finish and is engineered to maximize power output across the RPM range with its optimized runner design and large plenum volume.

Key Specifications:

  • Port Size: 2.49" height x 1.21" wide for excellent flow characteristics
  • Runner Length: 6.58" with tapered cross-sectional area from 4.25 in² to 2.53 in²
  • Base Plenum Height: 8.42" to lifter valley cover flange
  • Total Height with 92/102mm Plenum: 12.32" to lifter valley cover flange
  • Throttle Body Compatibility: Designed for 92mm or 102mm throttle bodies
  • Plenum Top Gasket: 3/32" round O-ring cord design
  • Mounting Flange Gasket: Standard LS3 molded O-ring for secure sealing

The Hi-Ram design positions the throttle body at a 25-degree downward angle from vertical, located 3.84" forward from the engine block front flange and 8.42" above the lifter valley cover. This configuration optimizes airflow distribution while providing excellent hood clearance options. Compatible with Holley's modular EFI plenum tops for custom tuning applications.

Products specifications

Basic Operating RPM Range

3500-8000

Brand

Holley EFI

Category

Engine

CNC Ported

No

Color

Black

Construction

Cast

Cylinder Head Port Shape

Cathedral

EGR Port

No

Emission Code

4

Engine

GM LS1/LS2/LS6

Flange Style

EFI

Fuel Injectors Included

No

Fuel Rail(s) Included

Yes

Fuel System Type

EFI

Gasket Or Seal Included

Yes

Grade Type

Performance

Intake Port Gasket(s) Included

No

Manifold Type

Hi-Ram

Material

Aluminum

Nitrous Bung(s) Included

No

Part Type

Engine Intake Manifold

Plenum Finish

Black

Product Type

Intake Manifold

Recommended Use

Forced Induction

Removable Runners

No

Removable Top/Lid

Yes

Single Or Dual Plane Type

Single Plane

Sub Category

Cylinder Block Components

Throttle Body Bore Diameter

92 MM

Throttle Body Gasket Included

Yes

Throttle Body Included

No

Vacuum Ports

Yes

Warning

California Proposition 65

Warranty

Manufacturer's Limited 90 Day Warranty

The tires work very good

You had what i was looking for

Haven't read the product yet but reviews were great so not worried.

Really painless transaction. My item arrived essentially on time (a slight delay from the estimated delivery date - but THM was all over it, touching base with updates before I even had to reach out). My order arrived in working order and packaged well. I will definitely order from them again!

Good experience. Good price.

Super easy and fast way to order

simple purchase, shipped and delivered quickly

Thank you

The item arrived three days after I ordered it very fast shipping thank you

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