Morgan - Plus 8
Faced with the decreasing availability of large four-cylinder engines for use in their +4 models, Morgan began to install the recently available Rover V8 engine in their cars in 1968, giving these cars the model designation +8. The V-8 engines were much wider than the big four previously used, and the engine displacement jumped from the 2.3 Ltr of the Triumph TR5 engine to 3.5 Ltr, but the V-8 was no longer than the four, and its aluminium-block reduced weight to the extent that it was lighter than the four. These features made the +8 accelerate much more quickly than the +4 and also improved its road-holding capability. Initially it was coupled to a 4 speed gearbox but in 1972 the original gearbox was replaced by one from the Rover 3500 and then by the five speed unit from the Rover SD1 in 1976.
GB (UK) England
Central London, England
In the +8's final iteration, the Rover V8 was fuel-injected and produced 196hp. Thus powered, the car could accelerate from 0-60 mph in 5.6 seconds. Enthusiasts work on the engine, exhaust and electronic chip management to improve this figure.
For years (from 1974 to 1992), all Morgans, (of which 98% were Plus 8s) imported into the United States were converted to run on propane as fuel to pass the U.S. emissions regulations. When the Rover Group certified their V-8 engine for use in the Range Rover SUV sold in the U.S., Morgan made a gasoline-powered +8 available with the same engine in the same tune and with the same anti-emission devices. As safety regulations continue to change, Morgan is again challenged to meet the requirements and is limited in its ability to import cars into the United States. In 2006, a request for an airbag exemption to the NHTSA was refused, and the importation of classic Morgans ceased.