The RC83 represented Dome's attempt to establish greater technical independence after the RC82's disappointing campaign. The decision to design the chassis in-house rather than commission an external supplier marked a significant step for the Japanese constructor. The adoption of the larger 4-litre Cosworth DFL, rather than the smaller variant fitted to the RC82, was intended to address the power deficit that had hampered the earlier car.
Racing under the Autobacs Dome Motorsport banner, the RC83 made its competitive debut at the 1983 1000 km of Fuji, a round of the Fuji Long Distance Series. Eje Elgh and Tiff Needell were chosen as the driving duo. The debut ended in retirement after just 31 laps when the transmission failed.
The team returned for the 1000 km of Suzuka, a round of the All Japan Endurance Championship. There, Elgh and Needell brought the car home in fourth place — last of the classified Group C finishers, but only five laps behind the victorious Trust Racing Team-entered Porsche 956. The result represented the RC83's best competitive showing.
The second 1000 km of Fuji of 1983 counted for both the FIA World Endurance Championship and the All Japan Endurance Championship. Elgh and Needell completed 148 laps, but the total was insufficient to earn a classified result. Stanley Dickens replaced Needell for the 500 Miles of Fuji, the season finale of the Fuji Long Distance Series, and the team recorded a seventh-place finish.
Dickens and Elgh were retained as the driving pair heading into 1984. At the season-opening 500 km of Suzuka, however, the team was unable to start due to a problem with the car's metering unit. Both drivers were subsequently entered for the 24 Hours of Le Mans, but an accident during practice prevented them from taking the start.
Midway through the 1984 season, the new Dome 84C-Toyota made its race debut at the 1000 km of Suzuka. Dickens and Elgh were assigned to the new car, leaving Kaoru Hoshino, Aguri Suzuki, and Shinji Uchida to drive the RC83. Another accident forced the older car into retirement after 50 laps. At the 1000 km of Fuji, Suzuki was paired with Rupert Keegan in the RC83, but an accident during practice prevented the team from qualifying for the race. That entry marked the final competitive appearance of the Dome RC83.
The RC83 achieved modest but meaningful results in Japanese endurance racing, most notably its fourth-place finish at the 1000 km of Suzuka in 1983. The programme demonstrated Dome's capability to develop a competitive Group C platform using in-house engineering, laying groundwork for the more advanced 84C that followed. Its brief career coincided with the rapid development of Japanese manufacturer involvement in international endurance racing during the mid-1980s.