up to 4.3 L. The main difference between the Land Rover and TVR versions lies in the usage of Land Rover 3.9 pistons (usually of the 9.35:1 compression version, some report of low compression (8.13:1) pistons being used in a small number of engines) of which the tops were machined down to match the deck height, thus increasing static compression ratio. Head gaskets were originally copper and slightly thicker than the composite gaskets of later engines. TVR 4.3 engines tended to have elaborately ported cylinder heads with minimized valve guide protrusion into the ports, and Duplex timing chain with timing adjustment by vernier gear were specified although in practice, not all engines received it. Camshafts were usually Kent Cams 214 spec, although 'big valve' versions could have a 224 or even a 234 (race) cam installed. The so-called 'pre-cat' versions of the Griffith predominantly used this engine, although a 4.0-litre version was also available. The Chimaera was introduced with choice of 4.0- and 4.3-litre engines. A small number of 'Big Valve' versions, sporting modified cylinder heads with intake and exhaust valves and a more radical camshaft profile, found their way to early Griffiths and Chimaeras. Applications: 1992–1993 TVR Griffith 1993–1994 TVR Chimaera 4.4 Leyland of Australia produced a version of the aluminium V8 for their Australia-only 1973 Leyland P76. The bore and the stroke was , making it a square engine. The block deck height was extended and longer conrods were fitted between centres. A Bendix Stromberg two-barrel carburettor was used in place of SU carburettors. This rare engine produced and and, although export (to the UK) versions were planned, the closure by British Leyland of their Australian operations in 1975 precluded the widespread application of this engine. British Leyland did import one complete P76 engine for assessment but it was never fitted to a vehicle and was sold off on the demise of the company. Applications: 1973–1975 Leyland P76 1976–1979 Leyland Terrier truck 4.5 Not to be confused with the later 4.6-litre engine which TVR badged as a '4.5' for the Chimaera, there also existed a version with an crank and bore giving capacity, which was used by TVR in the low-volume special 450 SEAC, the race version thereof and the subsequent Tuscan Challenge racers. A tiny number of Griffith and Chimaera road cars were built with a version of this engine, known as the '450 BV' (Big Valve).