}} The car was further updated in 1968 to become the 1600 with two- and four-seat open bodies available. The 4/4 1600 also benefitted from minor improvements to the body, including door handles from the Land Rover.
Ford Kent Crossflow engine The 4/4 1600 was introduced in February 1968 fitted with a variety of Ford 1599 cc
Kent engines of type 2737E (70 bhp), type 2737GT (95.5 bhp) and type 2265E (95.5 bhp) from 1971 and a Ford four-speed gearbox. Detail improvements took place over the years, with fluted taillights introduced in 1971 and three (rather than two) windscreen wipers being installed from 1976 on. Safety improvements include dual circuit brakes, a padded dashboard, and a cable-operated clutch; these all appeared in 1971. A total of 3513 were built by March 1982.
Fiat Twin-Cam engine The Morgan 4/4 1600 TC was introduced in November 1981. Offered as a more powerful alternative to the Ford-engined variants, this was fitted with a , 1584 cc
Fiat twin-cam engine and five-speed Fiat gearbox. 96 were built by November 1985. Morgan also went on to install the 2-litre version of the Fiat Twin Cam in the new Plus Four, from 1985.
Ford CVH engine Introduced in March 1982 with a Ford 1597 cc
CVH engine and Ford four-speed gearbox until 1984, after which it was replaced with the five-speed gearbox from the
Ford Sierra. The 4/4 received the Plus Four's wider wings beginning in 1985. From 1986 steering was changed from the original cam and peg to a Gemmer
recirculating ball system. 1652 were built by November 1991.
Ford CVH EFI engine From November 1991, a Ford 1597 cc CVH engine with electronic
fuel injection was used. 187 were built by January 1993, when the 1800 version was introduced. ==4/4 1800==