Description
Performance Upgrade. The Holley GM LS3/L92 Dual Plane Carbureted Intake Manifold; Black is engineered to enhance the power and torque characteristics of GM LS Gen III and IV engines with LS3/LS92 rectangular port heads. It facilitates easy carburetor installation, improving streetability and throttle response in both carbureted and throttle body EFI applications. It is perfectly suited for enthusiasts looking to achieve a balanced power band up to 6,500 RPM.
Construction and Appearance. Crafted from cast aluminum, this intake manifold features a durable black finish for enhanced corrosion resistance and aesthetic appeal. The design incorporates advanced casting methods to ensure consistent wall thickness and high-quality build, while Viton® O-ring gaskets provide superior sealing for reliable performance and installation ease.
Installation. Installation is straightforward with no need for drilling or extensive modifications, thanks to included mounting bolts and washers and a minimum carburetor flange height designed to fit under most hoods without adjustments. This intake manifold offers a direct bolt-on fitment for compatible GM LS engines.
Warranty. The product includes a manufacturer’s limited 90-day warranty covering defects in materials and workmanship.
Application. Specifically designed to fit the 07-08 6.2L Yukon with no listed exclusions or additional installation requirements.
Holley 300-129BK
CA Residents: WARNING: Cancer and Reproductive Harm
- Fits All GM LS Gen III Or IV Engines Equipped With LS3/LS92 Style Rectangular Port Cylinder Heads
- Dual Plane Design Optimized For Low End Torque And High RPM Performance Up To 6500 RPM
- Includes Viton® O-ring Cylinder Head Mounting Flange Gaskets For OEM Style Seal
- Minimum Carb Flange Height Fits Vehicles With Minimal Or No Hood Modifications
- Cast Aluminum Construction Provides Lightweight And Consistent Wall Thickness
- Port Size Measures 2.454 Inches Height By 1.09 Inches Wide
- 4150 Square Bore Carburetor Flange
- Weight Is Approximately 14.56 Pounds
- Rear Height Is 6.14 Inches From Lifter Valley Cover To Carb Mounting Flange
- Front Height Is 5.07 Inches From Lifter Valley Cover To Carb Mounting Flange
- Throttle Body Bore Diameter Is 3.6 Inches
- Includes Mounting Bolts And Washers
- Vacuum Ports Available
- Designed For Carbureted Or Throttle Body EFI Street Applications
- Not Legal For Use On Emissions Controlled Engines Or Street Vehicles
- No EGR Ports Or Nitrous Bungs Included
- Gaskets And Fuel Injectors Are Not Included
- Emissions Code 4, Legal For Racing Use Only Vehicles
- Fits 07-08 6.2L Yukon
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