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Holley®  |  SKU: 300-121BK

Holley® #300-121BK GM LS1/LS2/LS6 EFI 2x4 Dual Plane Intake Manifold

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$819.95
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Description

COMPATIBLE: 

2004 - 2005 CADILLAC CTS-V (5.7L-LS6)

1998 - 2002 CHEVROLET CAMARO (5.7L-LS1)

1997 - 2004 CHEVROLET CORVETTE (5.7L-LS1)

2001 - 2004 CHEVROLET CORVETTE Z06 (5.7L-LS6)

2005 - 2008 CHEVROLET CORVETTE (6.0L-LS2)

1998 - 2002 PONTIAC FIREBIRD (5.7L-LS1)

 

All GM LS Gen 3 engines equipped with LS1/LS2 style cathedral port cylinder heads. NOTE: The EFI versions of the LS HI-Ram intake manifold and fuel rail are designed to accept Bosch Style EV-1 or Magneti Marelli Pico fuel injectors. OE LS fuel injectors may not fit properly in the Hi-Ram EFI intake manifold fuel rail assembly. There is a kit available separately for the LS7 Hi-Ram EFI to allow the use of stock LS7 fuel injectors, P/N 300-230 (see below in the service parts section).

Holley EFI 2x4 Dual Plane Intake Manifold, LS Gen 3 LS1/LS2/LS6 engines

  • The Holley GM LS1/LS2/LS6 2x4V dual-plane was designed in the tradition of the great dual Holley 4160 induction systems that competed on drag strips, in Trans-Am and at Lemans in the 1960’s.

  • The dual-plane equal-distribution layout produces great mid-range torque without compromising top end power.

  • Carbureted and EFI versions available

  • Power band from 1500-7000 rpm

  • Appropriate for any street/performance, muscle car, or street rod enthusiast

  • Cast aluminum construction

  • Intended for use on all GM LS Gen III engines equipped with LS1/LS2 style cathedral port cylinder heads

  • Carb Flange Center-To-Center: 8-5/8”

Basic Operating RPM Range

1500-6500 RPM

Brand

Holley EFI

Carburetor Flange

Square/4150

Category Filter

Intake Manifolds

Clearance Category

Intake Manifolds

Color

Black

Construction

Cast

EGR Port

No

Emission Code

4

Engine

GM LS1/LS2/LS6

Finish

Black

Front Height

4.47 inch

Front Maximum Height

4.47 IN

Fuel System Type

EFI

Grade Type

Performance

Intake Port Gasket(s) Included

No

Manifold Type

Dual Plane

Material

Aluminum

Nitrous Bung(s) Included

No

Plenum Finish

Black

Product Type

Intake Manifold

Rear Height

5.54 inch

Rear Maximum Height

5.54 IN

Removable Runners

No

RPM Power Band

1500-6500 RPM

Single Or Dual Plane Type

Dual Plane

Throttle Body Included

No

Warranty

Limited 90 Day

UPC

090127715857

Part Number

300-121BK

ABOUT HOLLEY PERFORMANCE

For over a century Holley has driven the cutting edge of fuel-system design. That work continues today through Holley’s market-leading EFI products as well as through Holley’s family of best-in-industry brands. Top brands like MSD, Flowmaster, Hurst, Accel, and many more make up the industry’s leading offering of enthusiast-driven products to deliver robust, complete performance solutions for builders, racers, and drivers. From propelling the LS-, Coyote-, and Gen 3 Hemi-swap trends, to continuously innovating late-model and vintage vehicle performance, Holley’s commitment to its customers and their cars is at the core of everything we do.

Guides:

WARRANTY:

 

VEHICLE FITMENT
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