Holley EFI - 300-137
Holley Single Plane EFI Intake - GM LS1/LS2/LS6
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
- Weight - 11.5 lbs.
- 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
Basic Operating RPM Range: 2500-7000 RPM
Brand: Holley EFI
Carburetor Flange: Square/4150
Category: Intake Manifolds
Color: Silver
Construction: Cast
EGR Port: No
Emission Code: 3
Engine: GM LS1/LS2/LS6
Finish: Silver
Flange Style: 4150 Square Bore
Front Height: 5.417 inch
Front Maximum Height: 5.417 IN
Fuel System Type: EFI
Grade Type: Performance
Intake Port Gasket(s) Included: No
Manifold Type: Single Plane
Material: Aluminum
Nitrous Bung(s) Included: No
Plenum Finish: Natural
Product Type: Intake Manifold
Rear Height: 5.417 inch
Rear Maximum Height: 5.417 IN
Recommended Use: Forced Induction
Removable Runners: No
RPM Power Band: 2500-7000 RPM
Single Or Dual Plane Type: Single Plane
Throttle Body Included: No
Warning: California Proposition 65
Warranty: Limited 90 Day
