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Introduction of the GM Fleetside


Though fleetside pickups are the common style today, they certainly had a unique appearance in the late 1950’s. Until then, the stepside body style with outside rear fenders was the norm. With smaller horsepower from available engines, the limited hauling capacity in the stepside box was well matched to the existing power plants.

If the customer required a pickup with more hauling volume, the stepside was simply made longer. To compensate for the extra gross weight, the manufacturer lowered the differential gearing. Thus the small engines continued to serve well but the result was a slower highway speed.

With the introduction of the Chevrolet high oil pressure 235 six and 265 small block V-8 engine, power was now available to allow for a radical new bed change. Pickup bed dimensions would be increased side to side in addition to length. Extra hauling capacity on the same wheelbase could be now handled by the additional horsepower. With the same wheelbase, an approximately 50% increase in bed capacity was created with GM’s new fleetside.

Both Chevrolet and GMC introduced the same fleetside in 1958. It came in both six and eight foot lengths on the 1/2 ton chassis. The eight foot box could also be ordered on the 3/4 ton frame. (If you needed a 1 ton pickup the prior long stepbed model still remained the only choice.) No doubt, these new fleetsides created much notoriety in a world of stepside pickups. To draw even more attention GM placed chrome die cast “Fleetside” lettered emblems toward the rear of each bed side.

This first GM fleetside box style was offered only two years until a redesigned side was introduced in 1960. The early bed 1958-1959 sides can be easily recognized due to their long 5″ wide horizontal spear stamped in the middle. These terminate at a unique round rear taillight which is also special to just this bedside.

A very deluxe optional model of this new fleetside was introduced in 1959. Some feel it was to replace the recently discontinued Cameo Carrier. It featured additional bed trim, stainless window moldings, chrome grill and bumper, plus a nicer interior. Its sides came with long stainless steel strips and die-cast ends beside the horizontal bed spears. This bed trim is very rare today! Unfortunately, the few original beds remaining make reproducing these horizontal trim strips financially impractical.

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The featured early fleetside for this article is a 1959 Chevrolet short bed. Its owner is Olen Moore of Odessa, Missouri. He recently completed a three year ground up restoration to exact factory specifications. Olen even used the correct Galway Green, a very popular color during that era. Notice the stamped side spears and upper rear fleetside chrome emblems.

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