Designed for Gen IV engineswith LS3, L92 and L76 rectangular port cylinder heads. The Performer RPM LS3 manifoldis ideal for anybody looking to build a carbureted LS3 or LS2 engine with an operating range between 1,500 - 6,500 rpm. It allows the useof a carburetor on these originally computer-controlledengines, offering maximum power and a broad torque curve. It features a high-risedual-plane design combined with a plenum that has been optimized for square-bore carburetors. Our advanced casting techniques allowed us to create a lightweight casting that weighs in at 14 lbs.

Performer RPM LS3 includes a provision for mounting an MSD Ignition Timing Control Module #6012, including passages for routingthe coil wire harness, for a clean look. A special throttleand trans bracket that works with 700R-4, 200-4R and Turbo 350 transmissions is also included, making this an easy retro-fit into any muscle car,street rod or marine application.