beginning in 2003, then back to Windsor Engine Plant in 2009. The SVT 5.4 L 4-valve engines are built at Romeo Engine Plant, hand assembled on the niche line. 2-valve Introduced in 1997, the SOHC 2-valve 5.4 L has a cast iron engine block and aluminum cylinder heads. The 5.4 L features multi-port fuel injection, roller finger followers, fracture-split powder metal connecting rods, and in some applications a forged steel crankshaft. The 2-valve SOHC 5.4 L engine was on the Ward's 10 Best Engines list for 1997–1998 and 2000–2002. Vehicles equipped with the 16-valve SOHC 5.4 L include the following: 3-valve In 2002, Ford introduced a new 3-valve SOHC cylinder head with variable camshaft timing (VCT), improving power and torque over the previous 2-valve SOHC version. The 3-valve cylinder head was first used on the 2002 Ford Fairmont 5.4 L Barra 220 engine in Australia manufactured in Windsor, Ontario, Canada. The 3-valve 5.4 L was introduced to the North American market in the redesigned 2004 Ford F-150. Vehicles equipped with the 24-valve SOHC VCT 5.4 L include the following: 4-valve In 1999, Ford introduced the DOHC 4-valve 5.4 L in the Lincoln Navigator under the InTech moniker, making it the second engine to use this name. Ford later used versions of the DOHC 4-valve 5.4 L in the 2000 Ford Mustang SVT Cobra R, the Ford GT supercar, and the Ford Shelby GT500. The DOHC 4-valve 5.4 L was also used in the Ford Falcon line in Australia under the Boss moniker until 2010, when it was replaced by a locally developed, supercharged version of the 5.0 litre Modular V8. The SVT Cobra R version of the 5.4 L 4-valve V8 had several key differences from its Lincoln counterpart. While the iron block and forged steel crankshaft were sourced directly from the InTech 5.4 L, the Cobra R powerplant benefited from new, high-flow cylinder heads that were designed with features developed for Ford's "Rough Rider" off-road racing program, application specific camshafts with higher lift and more duration than other 4-valve Modular cams, forged I-beam connecting rods sourced from Carillo, forged pistons that provided a 9.6:1 compression ratio in conjunction with the 52 cc combustion chambers, and a unique high-flow "cross-ram" style aluminum intake manifold. The Cobra R was rated at and though chassis dynamometer results have shown these ratings to be conservative with unmodified Cobra Rs often producing nearly at