Holley GM LS3/L92 Single Plane EFI Split-Design Race Intake Manifold (2008 6.2L Tahoe)

Description

High-Performance Intake Manifold. The Holley GM LS3/L92 Single Plane EFI Split-Design Race Intake Manifold is engineered to enhance airflow and power delivery specifically for GM LS Gen III and IV engines using LS3/L92 heads. It delivers improved throttle response and power gain optimized for mid to high RPM ranges, ideal for racing and high-output performance builds.

Construction and Appearance. Crafted from durable cast aluminum, this intake manifold features a natural raw aluminum finish. Its split-design allows easy disassembly for direct access to the internal plenum and port surfaces, secured with O-ring seals to ensure airtight assembly and simplify maintenance.

Installation. Designed to bolt directly to LS3/L92 cylinder heads with standard 4150 throttle body flanges, installation requires moderate mechanical skills without the need for drilling. Ensure proper throttle body compatibility, fuel system setup, tuning, and hood clearance during installation.

Warranty. Includes a manufacturer’s limited 90-day warranty against defects.

Application. Compatible with GM LS Gen III and IV engines equipped with LS3/L92 cylinder heads. Recommended primarily for high-performance and racing applications, particularly with forced induction setups. Fits a broad range of engine displacements between 4.8L and 7.0L V8s.

Holley 300-290

CA Residents: WARNING: Cancer and Reproductive Harm

• EFI Single Plane Split-Design Race Intake Manifold
• Fits All GM LS Gen III Or IV Engines Equipped With LS3/L92 Cylinder Heads
• As-Cast Runner Cross-Sectional Area – 4.5 In² At The Runner Entry Tapered To 3.2 In² At The Flange Exit
• A-B Height – 7.20″ (0° Carb Flange Angle)
• Split Feature Allows Disassembly Of The Intake For Direct Access To Internal Plenum And Port Surfaces
• Shoulder Bolt Locators And O-Ring Seal For Simple And Precise Reassembly
• Designed For Hi-Performance/Racing Engine Applications With 4.8L To 7.0L V8 Displacement Range
• Maximum Engine Speeds Of 6000-7000 RPM Depending On Engine Combination
• Throttle Body Flange – Standard 4150 For Up To 1-3/4″ Diameter Throttle Bores
• Port Size – 2.59″ Height X 1.28″ Wide
• Vacuum Port Options Include (2) 1/8, (1) 1/4, And (1) 3/8, NPT Ports At The Carb Flange
• Captured O-Ring Seals At Head Ports And Split
• Lighter Than Other Split Race Intakes
• 33 To 50% The Price Of Other Split Race Intakes
• Maximum Performance Race Design With Hood Clearance Consideration
• Recommended For Forced Induction Applications