For 1987 International became the first truck maker to offer a medium-duty line powered exclusively by diesel engines, its S series.
Lead trim: V-345 · up to 380 hp
International S Series1978–1989
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Nobody in Burbles has spotted a International S Series yet. See one on the street, point the app at it, and the first card is yours — with your @handle permanently credited on this page.
FactFor 1987 International became the first truck maker to offer a medium-duty line powered exclusively by diesel engines, its S series.
International Harvester's S series consolidated the Loadstar and Fleetstar into one range with a model-specific wide cab and a tilting fiberglass hood.
Collectors Spotted in the International S Series Lineage
No member has published a public street spot of the International S Series yet — the First · Worldwide stamp is wide open.
Trims & Figures
6 published trims in the catalogue. A blank is a figure not recorded, not zero.
| Trim | Years | Engine | Power | Torque | 0–60 | Drive | Gearbox | MSRP |
|---|---|---|---|---|---|---|---|---|
| Cat 3406 | 1978–1989 | 14.6 L Inline-6 | 380 hp | — | — | — | — | — |
| Caterpillar 3208 10.4L diesel V8 (210 hp) | 1978–1989 | 10.4 L V8 | 210 hp | — | — | — | — | — |
| Cummins NTC-350 14.0L diesel I6 (350 hp) | 1978–1989 | 14.0 L Inline-6 | 350 hp | — | — | — | — | — |
| International IDI-444 7.3L diesel V8 (190 hp) | 1978–1989 | 7.3 L V8 | 190 hp | 388 lb-ft | — | — | — | — |
| International V-392 6.4L V8 (236 hp) | 1978–1989 | 6.4 L V8 | 236 hp | — | — | — | — | — |
| V-345 | 1978–1989 | 5.7 L V8 | 197 hp | 309 lb-ft | — | — | — | — |
Owning one
An estimate, for the Cat 3406 trim: fuel on its EPA figure and a dated national price, upkeep on a per-mile average for the kind of car it is.
Owners’ builds
Nobody has claimed one yet.
Photographs
In 1989 International split the S series into three model families under the new Thousand Series numbering, all sharing the same cab structure.
For 1987 International became the first truck maker to offer a medium-duty line powered exclusively by diesel engines, its S series.
Rivals
Same body, same money, other badges — tap any card to flip.
Introduced in 1991, the FL-Series was the first all-new medium-duty conventional truck range in North America since 1980, built around a Mercedes-Benz LK cab.
The eM2 began as a 2018 prototype with a 230-mile range and entered full-scale production in 2023 as a variant of the M2 Plus.
The Sterling Acterra paired the L-Line cab with a Freightliner Business Class chassis for Class 5-8 medium-duty work.
For 2021 Kenworth added battery-electric versions of its cabover, the K270E and K370E, alongside the T680E.
In 2008 Kenworth replaced the medium-duty T300 with the Class 5-7 T170/T270/T370 family.
The T300 was Kenworth's first medium-duty conventional truck, a T600 adapted to the lower Class 7 weight rating.
When the 210 returned in 2011 it was built in Mexicali, Mexico, on the chassis of the 325 and 330, keeping only the DAF LF cab.
Freightliner built a prototype diesel-electric hybrid on an M2 106 in 2006, and by 2011 the 1000th M2 hybrid had been produced.