For 1962, International introduced the new Loadstar short-conventional series to replace both the B-series conventionals and the BC-series short conventionals. The Loadstar name now covered the entire line instead of just the severe-service models within it. The Loadstar cab appeared to be based on the cab of the 1961 C-series light duty trucks, but the blunt front end was totally different. The grille was made up of 14 rows of short horizontal slots aranged in 3 columns. The Loaadstar 1600 replaced both the B160-series and BC160-series. The maximum GVW was increased from 19700 lb to 22000 lb and the GCW went up from 29000 lb to 30000 lb. Engines were basically the same as before: the BD-264 6-cylinder gasoline engine was standard with the V-266 and V-304 V8s and the D-301 diesel optional. A new option was the 131-hp Perkins D-354 6-cylinder diesel.
In 1965 the 197-hp V-345 V8 was added, along with the Allison 6-speed automatic transmission. Heavier optional front and rear axles in 1966 raised the capacity ratings to 24,000 lb GVW and 40,000 lb GCW. The smaller 6-cylinder gas engines were discontinued in 1969 and only the BD-308 was left for die-hard 6-cylinder fans. In 1971 the V-266 V8 and D-301 diesel were dropped.
In 1972 an optional tilting fibreglass hood/fender assembly was made available on the Loadstar series. The large square radiator changed the look of the trucks considerably. At that time the BD-308 and Perkins diesel were discontinued, leaving only the V-304 and V-345 engines. At the same time the optional Allison 6-speed automatic was reduced to 4-speeds. In 1973 International began using net hp ratings for its gasoline engines. The V-304 was rated at 147 hp at 3,900 rpm and the V-345 developed 157 hp at 3,800 rpm. The V-304 was dropped in 1974 and larger 10.00-20 12-ply tires were made optional.
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