Peter Grieve built a very unique 1956 Land Rover. Practical Performance Car reveals the classic vehicle is powered by a 18.0 L Rolls-Royce Meteorite V8. These engines were derived from the Meteor V12 motor used in tanks. Peter made several modifications to his Meteorite V8. He covered from carburetors to fuel injection and added two turbochargers. There is also a water-methanol injection system. On the engine dyno, the V8 made 1080 hp (794 kW) on 15 psi (1.0 bar) of boost. Peter installed a 2.6:1 overdrive to help increase rpm while reducing torque. Behind that is a TH400 three-speed automatic transmission and Ford 9-inch rear end. Peter put the Land Rover on the dyno where it made 580 hp (426 kW) to the wheels on 8 psi (0.55 bar) of boost.
Source: Practical Performance Car