The Nissan GTP ZX-Turbo, also known as the GTP ZX-T, was a series of racing cars developed by Nissan Motors in collaboration with Electramotive Engineering to compete in the IMSA GT Championship. The car was active from 1985 to 1990 and was known for being the first car to defeat the Porsche 962, which had dominated IMSA’s premiere GTP category.

The GTP ZX-Turbo was named due to its shared engine with the production Nissan 300ZX, the turbocharged VG30ET V6. Although the engine block was similar, the GTP ZX-Turbo’s engine was extensively modified to cope with the stress of racing. The car was powered by a heavily modified VG30ET production engine with power raised to 641 hp.

In 1988, driver G. Brabham won the Driver’s Championship in it. The California-based Electramotive Engineering was responsible for developing and racing the vehicle, winning the Constructor’s Championship in 1989, 1990 and 1991.

The car underwent several modifications over its lifetime. Modifications to the cars eventually reached the point that Electramotive began to construct their own chassis to replace the older cars rather than rely on Lola for cockpit tubs. A total of five Electramotive-built tubs were completed in 1988. Electramotive later became Nissan Performance Technology Inc. (NPTI) in 1990, finally retiring the GTP ZX-Turbos once the new NPT-90s were completed halfway through the season.