the rear wheels. The Ford GT version of the is a highly specialized version of the Modular engine. It is an all-aluminum alloy, dry-sump DOHC 4 valves per cylinder with an Eaton 2300 Lysholm screw-type supercharger and showcases numerous technological features, such as dual fuel injectors per cylinder and oil squirters for the piston skirts, not found in other Ford Modular engines of the time. This engine benefits from an improved version of the high-flow 2000 Cobra R cylinder head and unique high-lift camshafts, now rated at at 6500 rpm and at 4500 rpm. The Shelby GT500 uses a 4-valve DOHC 5.4 L with an Eaton M122H Roots type supercharger and air-to-liquid intercooler. The GT500 5.4 L shares its high-flow cylinder head castings with the Ford GT, with only minor machining differences, and shares camshafts with the 2003–2004 Ford Mustang SVT Cobra; which have less lift and duration than the Ford GT camshafts. The 2007–2010 GT500 engine used an iron engine block, while the 2011 GT500 5.4 L receives a new aluminum engine block, with Ford's first production application of their patented Plasma Transferred Wire Arc (PTWA) cylinder coating, eliminating the need for pressed in cylinder liners. The PTWA spray apparatus was co-developed by Ford and Flame-Spray Industries of Long Island, New York, for which they received the 2009 IPO National Inventors of the Year Award. The 2011 GT500 engine weighs less than the previous iron-block version, thanks in part to the lack of cast iron cylinder liners. All of the 5.4 L 4-valve engines destined for use in SVT vehicles, such as the Ford GT and Shelby GT500, have been hand-built by technicians at Ford's Romeo, Michigan plant. Vehicles equipped with the 32-valve DOHC 5.4 L include the following: 5.8 L Trinity The 5.8 is formally known as the Trinity Engine or 5.8-liter V8 engine, which benefits from cylinder heads with improved coolant flow, Ford GT camshafts, piston-cooling oil jets similar to those found on the 5.0 Coyote, new 5-layer MLS head gaskets, an over-rev function that increases the red line to 7000 rpm for up to 8 seconds (from 6250 rpm), and a compression ratio increased to 9.0:1 from 8.5:1. Displacement is with a bore x stroke of . Boost is supplied by a 2.3 L Eaton TVS supercharger with maximum boost of . Trinity has intake valves and exhaust valves. 2013–2014 Ford Shelby GT500, DOHC 4 valves