The Mack L series was Mack’s heavy conventional truck between 1940 and 1956. It carried Mack’s range through the Second World War and the post-war boom, and in 1953 it began to be replaced by the B series, a truck that stayed in production until 1966.
Mack L series at a glance
| Production | 1940–1956 |
|---|---|
| Type | heavy conventional-cab truck |
| Replaced by | Mack B series, from 1953 |
| Layout | engine ahead of the driver, separate hood and fenders |
| Windshield | almost vertical |
| Cab | narrower style carried over to the later R series |
| Successor line | B series (1953–1966), then R series (1966–2005) |
There is no dedicated Wikipedia article on the Mack L series; this page is based on the B and R series articles, which describe it.
History of the Mack L series
The L series was the truck Mack built through the Second World War and the years of reconstruction that followed. It was a heavy conventional: a long bonnet, separate fenders and a cab behind the engine, with an upright, almost vertical windshield of the kind American trucks wore before the wrap-around screens of the 1950s.
In 1953 the B series took over from the L. The new truck was a clear step forward — a sloped windshield, larger rounded fenders, a lighter and roomier cab — but Mack did not cut the old model off at once. The L series stayed in production until 1956, three years into the B series’ life, so that customers could make the change at their own pace. Some of the L came back later, too: when Mack designed the R series cab in the mid-1960s the windshield was made almost vertical, a deliberate reference to the L series trucks it had once replaced.
Design and features
- Separate hood and fenders: the pre-war layout, with poor access to the engine bay compared with the later R series.
- Upright windshield: the most recognisable feature of the L cab.
- Long overlap with the B series: the L stayed in production until 1956, three years after its replacement appeared.
Mack L series versions
- L series (1940–1956): the standard heavy conventional range.
- LTL, LT and LJ: the model designations recorded in this collection.
The L was replaced by the Mack B series, which in turn gave way to the Mack R series. The fire chassis of the same era is covered on the Mack CF series page. More trucks are in the Mack collection.
Sources
- Mack B series, English Wikipedia: L series production years and its replacement
- Mack R series, English Wikipedia: the R cab and its link to the L series windshield
