Holley 300-269 Single Plane EFI Intake GM LS7 Single Plane EFI LS Intake Manifold Fits All GM LS Gen III Engines Equipped with

Designed with a 4150 Square bore flange. Optimized runner layout and constant cross sectional area - broad torque curve, best vehicle performance from 2500-7000 RPM The manifold kit includes the fuel rails, mounting hardware, and o-ring cylinder head mounting flange gaskets.

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 Single Plane EFI LS Intake Manifold.

Fits all GM LS Gen III engines equipped with LS7 cylinder heads.

Features and Benefits:

• Cast aluminum construction - great manifold for centrifugal blower, turbocharged or Nos mild power adder applications Port size - 2.33 inch height x 1.27 inch wide Optimized runner layout and constant cross sectional area - broad torque curve, best vehicle performance from 2500-7000 RPM Weight - 11.5 lbs
• Includes Fkm o-ring intake to cylinder head gaskets Height (front) - 5.417 inch to the lifter valley cover flange at the engine block front flange and bellhousing flange 4150 Square bore flange Minimum carb flange height - fit in vehicles with minimum hood modifications 2500-7000 RPM power band Efficient casting design - lightweight, consistent wall thicknesses, improved casting quality

Associated Comments:

• Includes fuel rails, mounting hardware, and O-ring cylinder head mounting flange gaskets. The included fuel rails are designed to accept Bosch Style Ev-1 or GM OE LS7 fuel injectors.

Details:

• Basic Operating RPM Range: 2500-7000 RPM
• Cnc Ported: No
• Carburetor Flange: Square/4150
• Carburetor Quantity: 1.0
• Carburetor Studs Included: No
• Color: Silver
• Construction: Cast
• Cylinder Head Port Shape: Raised Rectangle
• Deck Height: 9.24 Inch
• EGR Port: No
• Engine: GM LS7
• Flange Style: 4150 Square Bore
• Front Maximum Height: 5.417 Inch
• 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: Single Plane
• Material: Aluminum
• Nitrous Bung(s) Included: No
• Plenum Finish: Natural
• Rear Maximum Height: 5.417 Inch
• Recommended Use: Forced Induction
• Removable Runners: No
• Removable Top/Lid: No
• Single Or Dual Plane Type: Single Plane
• Throttle Body Bore Diameter: 3.6
• Throttle Body Gasket Included: No
• Throttle Body Included: No
• Vacuum Ports: Yes
• Warranty: Manufacturer's Limited 90 Day Warranty

Installation Guide: Download PDF

Installation / Product Video: Watch on YouTube

⚠️ California Proposition 65 Warning
California Residents: This product can expose you to chemicals which are known to the State of California to cause cancer or other reproductive harm. Please visit www.p65warnings.ca.gov for more information.