Holley GM LS3/L92 Single Plane Carbureted Intake Manifold (07-08 6.2L Sierra 1500 Denali)

Description

Performance Carbureted Intake. The Holley GM LS3/L92 Single Plane Carbureted Intake Manifold is engineered to improve airflow and power delivery for carbureted setups on LS3/L92 style rectangular port cylinder heads. It enhances engine performance primarily in the 2500 to 7000 RPM range, making it ideal for enthusiasts seeking a broad torque curve with strong mid to high RPM power. This manifold is designed for high-performance street or race applications where carbureted induction is preferred.

Construction and Appearance. Crafted from cast aluminum, this intake manifold features an efficient casting design with consistent wall thickness and improved quality. It maintains a natural, unfinished finish, emphasizing function over aesthetics while providing a lightweight yet durable component suitable for boosted or nitrous-assisted applications.

Installation. Installation requires moderate mechanical skill and does not require drilling or major modifications due to its minimum carb flange height design. It includes mounting bolts, washers, and O-ring cylinder head mounting flange gaskets for an OEM-style seal, allowing a straightforward bolt-on upgrade.

Warranty. This intake manifold comes with a manufacturer’s limited 90-day warranty for added peace of mind.

Application. Fits all GM LS Gen III and IV engines equipped with LS3/L92 style rectangular port cylinder heads. Also specifically fits the 07-08 6.2L Sierra 1500 Denali, ensuring compatibility with this vehicle and engine configuration.

Holley 300-131

CA Residents: WARNING: Cancer and Reproductive Harm

• Carbureted Single Plane Intake Manifold
• Fits All GM LS Gen III Or IV Engines Equipped With LS3/L92 Style Rectangular Port Cylinder Heads
• Minimum Carb Flange Height To Fit In Vehicles With Minimum Hood Modifications
• Weight – 11.5 Lbs
• Port Size – 2.50″ Height X 1.15″ Wide
• 2500-7000 RPM Power Band
• Includes Viton® O-Ring Intake To Cylinder Head Gaskets
• 4150 Square Bore Flange Accepts Up To 1.75″ Diameter Throttle Bores
• Optimized Runner Layout And Constant Cross Sectional Area For Broad Torque Curve And Best Vehicle Performance Between 2500-7000 RPM
• Efficient Casting Design With Lightweight, Consistent Wall Thicknesses And Improved Casting Quality
• Height At Front – 5.417″ To The Lifter Valley Cover Flange At Engine Block Front Flange
• Cast Aluminum Construction Suitable For Centrifugal Blower, Turbocharged Or NOS Power Adder Applications
• Vacuum Ports Included
• Fits 07-08 6.2L Sierra 1500 Denali