24/10/2025
: Studebaker’s Big Diesel Gamble (1962–1964)
Studebaker built trucks for half a century, but none quite like these. Between 1962 and 1964, the company produced just 702 diesel-powered units—a bold move into uncharted territory that came just before its exit from the truck market.
Though production records don’t separate the various weight classes, Studebaker offered diesel power from 1-ton commercial models up through 42,000-pound GCW heavy-duty units—territory usually reserved for much larger makers.
Under new CEO Sherwood Egbert, Studebaker looked for untapped niches. Diesels were common in Class 8 haulers by 1961 but rare in smaller trucks. Egbert saw an opening, and Detroit Diesel’s compact 53-series two-stroke made it possible—the 3-53 in 1–1.5-ton models and the 4-53 in heavier 2-ton-and-up versions.
The big diesel carried a 42,000-pound GCW and debuted in Studebaker’s familiar Transtar form, nearly identical to the gas models. To meet trailer-length laws, a 96-inch BBC “snub-nose” option appeared in 1963—a distinctive look for the short-lived line.
The 4-53 delivered 130 hp and 271 lb-ft from 212 cubic inches, with a 17:1 compression ratio. Keeping the compact two-stroke in its power band took finesse—typically a 5-speed main with either a 3-speed auxiliary or 2-speed rear axle kept things moving.
Studebaker promoted these as “America’s first medium-duty Diesel trucks,” promising up to 200,000 miles between overhauls and 50–60% lower fuel costs. Ads boasted heavy crossmembers, double-saddle engine mounts, a 12-inch (optional 13-inch) clutch, and even “no ignition trouble ever.”
Advanced for their time but launched too late, the diesels marked Studebaker’s final bid to stay competitive. Today, they stand as some of the rarest trucks the company ever built.
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Want to learn more about America’s trucking heritage? Visit the ATHS Library at aths.org/library—you’ll find over 50,000 original photos, brochures, and records that bring the industry’s history to life.
