The International Harvester L Series Trucks were introduced by International Harvester in 1949 and ran the gamut from light pickup trucks and delivery vehicles to full size tractor trailers. International would continue to produce the line until 1952 when it was replaced by the R Series. * Engine * Silver Diamond 220 6 Cylinder 220.5 cu. in. * Transmission * Three speeds forward, one reverse, synchromesh column mounted * Four speeds forward, one reverse, non synchromesh floor mounted