For the next year and a half he campaigned this car in Spa, San Sebastian, Madrid, Geisberg.
In 1949 he resumed racing, this time in sports cars (Bugatti, MGs, Cunninghams, AC Bristol, Lotus, Ferrari) in SCCA events and again at Le Mans, with his Ferrari 212 (1951, finishing 16th, 1952 DNF)[4] and with his Cunningham C4Rx coupe, co-driver John Gordon Bennett (1953, finishing 10th).
In 1956 the American Automobile Association ended its relationship as the sole motorsport organization affiliated with the Fédération Internationale de l'Automobile which governed international racing.
Moran took it upon himself to organize the Automobile Competition Committee for the United States (ACCUS) to overcome rivalries between SCCA, USAC and NASCAR clubs and have one umbrella entity to work with the FIA.
He became the first president of ACCUS and managed it skillfully in its early years and led the negotiating with the FIA for US affiliation.