Convert your GM LS engine to allow a 4150 style throttle body to sit on top of your engine for retrofit applications with this Aeroflow Performance Hi Rise Race cast intake manifold. This single-plane intake manifold is designed to keep your air and fuel distribution going into the engine at a steady and even flow for maximum performance and efficiency. The carburettor-mounting pad is designed to accept aftermarket 4150 square-bore throttle bodies or adapter plates for turbocharged applications. Specifically designed to suit GM LS Gen III and IV engines equipped with OE or aftermarket LS3 rectangle port cylinder heads.

• Fits GM LS3 Rectangle Port Engines.

• EFI Applications.

• This is designed for GM LS Engines with EFI only. Use AF6040-6005 for NON-EFI applications.

• This intake manifold does not work with factory OEM fuel rails and requires the use of Aeroflow Fuel Rail Kit included (AF6999-5000).

• Requires the use of 14mm short (33.60mm) fuel injectors (Sold Separately).

• Fits GM LS3 Engines.

• Single Plane Configuration.

• High Rise Intake Manifold.

• RPM operating range - 2500 to 7000.

• Natural Cast Finish.

•- Intake manifold Flat style gasket (must use Fel Pro 1222-2 or 1222-3).