Single Plane EFI LS Intake Manifold. All GM LS Gen III or IV engines equipped with LS1/LS2/LS6 style cathedral port cylinder heads.

- 2500-7000 RPM power band
- 4150 Square bore flange
- Optimized runner layout and constant cross sectional area - broad torque curve, best vehicle performance from 2500-7000 RPM
- Minimum carb flange height - fit in vehicles with minimum hood modifications
- Cast aluminum construction - great manifold for centrifugal blower, turbocharged or NOS power adder applications
- Efficient casting design - lightweight, consistent wall thicknesses, improved casting quality
- Height (front) - 5.417" to the lifter valley cover flange at the engine block front flange
- Port size - 2.50" height x 1.15" wide
- Includes Viton® O-ring intake to cylinder head gaskets - Viton® is a registered trademark of DuPont Performance Elastomers
- Kit does not work with factory fuel rails and requires the use of Holley Fuel Rail Kit P/N 534-219

Part #: 300-137

Weight: 17 lb.

Length: 23 in.

Width: 14 in.

Height: 7 in.

Brand: Holley EFI

Construction: Cast

Emission Code: 3

Engine: GM LS1/LS2/LS6

Finish: Satin

Flange Style: 4150 Square Bore

Front Height: 5.417 in.

Fuel System Type: EFI

Manifold Type: Single Plane

Rear Height: 5.417 in.

RPM Power Band: 2500-7000

In Store Pickup: Anaheim, CA, USA

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Holley Single Plane EFI LS1 Intake Manifold

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