International replaced the outdated light-duty KB-series with the all-new L-series for 1950. The new models featured the wide “Comfo-Vision” cab and attractive modern styling highlighted by a full-width grille. The ancient Green Diamond L-head engines of the KB-series, which dated back to the Willys-built 1933 D1, were replaced with new Silver Diamond ohv sixes. The Silver Diamond engines appeared to be a redesign of the larger Blue Diamond ohv engines, which continued to be used in top models of the medium-duty L-series.
The L-110 series included three specific models with model numbers: L-110, L-111, and L-112. All three models had the same specifications. The L-112 had a maximum GVW rating of 4800 lb set for relatively favorable operating conditions, the L-111 model had a lower GVW rating set for less favorable conditions, and the L-110 model had the lowest 4200 lb GVW rating for unfavorable conditions. In a sense, the “0” model was the heavy-duty version. This rating system causes quite a bit of confusion for truck historians. In practice, the L-110 ½-ton, for example, was usually treated as the light-duty model of the series and usually seen with a standard 3-speed transmission and standard 6.00-16 tires. The L-112 was considered the heavy-duty model, called a ¾-ton by dealers, and usually equipped with a 4-speed gearbox and 7.00-16 tires. In 1951 the GVW rating of the L-112 was increased to 5,400 lb.
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