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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.

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.

Price: $424.95

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

Features:

  • 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 Air and Fuel Delivery
Intake Manifolds
Category Filter 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
Warranty Limited 90 Day
UPC 090127687758
Part Number 300-137
Emissions
3

This part is legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles.

The following vehicles are considered Uncontrolled (Non-Emissions Controlled) Vehicles:

  • 1965 and older U.S. manufactured California Certified vehicles
  • 1967 and older U.S. manufactured Federally Certified vehicles
  • 1967 and older Foreign manufactured vehicle

WARNING: It is against the law to install this part on an Emissions Controlled Vehicle

The following vehicles are considered Emissions Controlled Vehicles:

  • 1966 and newer U.S. manufactured California Certified vehicles
  • 1968 and newer U.S. manufactured Federally Certified vehicles
  • 1968 and newer Foreign manufactured vehicle

SHIPPING: Most shipments via UPS ground or USPS priority service. 3-Day Select, 2nd Day Air, and Next Day Air are also available at an additional charge. Customer pays all freight charges. All Shipping on Large Items such as, Complete A/C kits, Front End Components, Serpentine kits, etc. will be subject to Standard UPS Ground Daily Rates unless specified otherwise. Handling Fees are non-refundable. International customers are responsible for ALL duties/taxes on international shipments.

RETURNS: All returns must have an RGA (Return Goods Authorization) number on the outside of the box and be returned within 30 days or they will be refused. Call (864) 848-0601 to obtain an RGA number. All returns are subject to a 15% restocking fee—resalable items only. NO RETURNS AT ANY SHOWS—NO EXCEPTION! If you paint it, mount it, install it—you bought it. Check your order upon receipt, shortages will not be honored after 7 days. Returns must have freight pre-paid. COD returns will be refused. NO RETURN ON SPECIAL ORDERS OR ELECTRICAL ITEMS. (Keyless entry, wiper motor, etc) Are not refundable unless defective.

Please visit our Company Policies page for more information or feel free to contact us with any questions!

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