The Toyota UZ engine family is a gasoline fueled 32-valve quad-camshaft V8 piston engine series used in Toyota's luxury offerings and sport utility vehicles. Three variants have been produced: the 1UZ-FE, 2UZ-FE, and 3UZ-FE. Production spanned 24 years, from 1989 to mid 2013, ending with the final production of the 3UZ-FE-powered Toyota Crown Majesta I-FOUR. Toyota's UZ engine family was replaced by the UR engine family. 1UZ-FE The all-alloy 1UZ-FE debuted in 1989 in the first generation Lexus LS 400/Toyota Celsior and the engine was progressively released across a number of other models in the Toyota/Lexus range. The engine is oversquare by design, with a bore and stroke size of . It has proven to be a strong, reliable and smooth powerplant with features such as 6-bolt main bearings and belt-driven quad-camshafts. The water pump is also driven by the timing/cam belt. The connecting rods and crankshaft are constructed of steel. The pistons are hypereutectic. The FV2400-2TC derivative is one of the few road-going engines that is FAA approved for use in an airplane. Its resemblance to a race engine platform (6 bolt cross mains and over square configuration) was confirmed in 2007 by David Currier (in an interview with v-eight.com), vice president of TRD USA, stating that the 1UZ platform was based on CART/IRL engine design. It was planned to be used on GT500 vehicles, however its subsequent use in the Daytona Prototype use had not been planned. In its standard, original trim with 10.0:1 compression, power output is , torque of . The engine was slightly revised in 1995 with lighter connecting rods and pistons and an increased compression ratio to 10.4:1 resulting in peak power of at 5,400 rpm and torque of at 4,400 rpm. In 1997, Toyota's VVT-i variable valve timing technology was introduced along with a further compression ratio increase to 10.5:1, bumping power and torque to at 5,900 rpm and at 4,100 rpm. For the GS400, output was rated at at 6,000 rpm and at 4,000 rpm. The 1UZ-FE was voted to the Ward's 10 Best Engines list for 1998 through 2000. Applications (calendar years): 1989–2000 Lexus LS 400/Toyota Celsior 1989–2002 Toyota Crown/Toyota Crown Majesta 1989–2004 Toyota HiAce HiMedic Ambulance (Japan only) 1991–2000 Lexus SC 400/Toyota Soarer 1992–1997 Toyota Aristo 1997–2000 Lexus GS 400 1995–1997 SARD MC8/MC8-R 2UZ-FE The 2UZ-FE was a version built in Tahara, Aichi, Japan and at Toyota Motor Manufacturing Alabama.