All GM LS Gen III or IV engines equipped with LS3/LS92 style rectangular port cylinder heads

Part Number: 300-129

Got an LS engine to get running? Nothing is easier than bolting on a carburetor. Holley's dual plane carbureted intake for GM's LS engines will help you get on the streets quick! Its dual plane design makes it perfect for low end torque, yet it still pulls all the way to 6,500 RPM! Our O-ring cylinder head mounting flange gaskets provide an OEM style seal and make installation a snap. Bolt one on today!

Features and Benefits

• Mounting flange gasket type - O-ring
• Optimized runner layout and constant cross sectional area provide a broad torque curve
• Port size - 2.454" height x 1.09" wide
• 1500-6500 RPM power band
• Includes Viton® O-rings - Viton® is a registered trademark of DuPont Performance Elastomers
• Weighs 14.56 lbs.
• Height (front) - 5.07" from front lifter valley cover to carb mounting flange
• 4150 square bore carb mounting flange
• Minimum carb flange height means it fits in vehicles with minimal or no hood modifications
• Height (rear) - 6.14" from rear lifter valley cover to carb mounting flange
• Great for carbureted or throttle body EFI street applications
• Cast aluminum construction and efficient casting design for light weight, consistent wall thicknesses and improved casting quality

Fits all GM LS Gen III or IV engines equipped with LS3/LS92 style rectangular port cylinder heads. Includes mounting bolts & washers. NOTE: These Dual-Plane Intake Manifolds are NOT legal for sale or use on engines with pollution controlled equipment.