
Mack built 126,745 B-series trucks over the 13 years from 1953 to 1966.
Lead trim: Mack EN291 (B20) · up to 335 hp
Mack B Model1953–1966
- 0spots by members
- Unclaimednobody has spotted one yet
- 0sets it belongs to
Nobody in Burbles has spotted a Mack B Model 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.
FactMack built 126,745 B-series trucks over the 13 years from 1953 to 1966.
Heavy conventional-cab Mack trucks built 1953 to 1966, with a sloped windshield and rounded fenders; replaced by the R series.
Collectors Spotted in the Mack B Model Lineage
No member has published a public street spot of the Mack B Model 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 |
|---|---|---|---|---|---|---|---|---|
| Cummins NTC335 | 1953–1966 | 14.0 L Inline-6 | 335 hp | — | — | — | — | — |
| Mack EN291 (B20) | 1953–1966 | 4.8 L Inline-6 | 107 hp | 232 lb-ft | — | — | — | — |
| Mack EN331 (B30) | 1953–1966 | 5.4 L Inline-6 | 122 hp | 264 lb-ft | — | — | — | — |
| Mack EN414 (B4X) | 1953–1966 | 6.8 L V8 | 214 hp | — | — | — | — | — |
| Mack EN540 (B6X) | 1953–1966 | 8.8 L Inline-6 | 185 hp | 445 lb-ft | — | — | — | — |
| Mack EN707 | 1953–1966 | 11.6 L Inline-6 | 205 hp | 615 lb-ft | — | — | — | — |
Owning one
We don’t estimate running costs for a car like this. What it costs depends on its condition, its specialist and how it is driven, and an average would mislead.
Owners’ builds
Nobody has claimed one yet.
Photographs

Rivals
Same body, same money, other badges — tap any card to flip.

Freightliner's 108SD and 114SD severe-duty trucks were introduced in part to win back market share lost when Sterling closed in 2009.

The 114SD put the M2's steel-reinforced cab on the chassis of the 122SD, the renamed Freightliner Coronado.

The EconicSD low-entry cabover, aimed largely at refuse work, is an adaptation of the Mercedes-Benz Econic.

Sterling began building the L-Line 7500, 8500 and 9500 at St. Thomas, Ontario in 1998 and added a Mercedes-Benz diesel late in 2000.

Western Star's heavier vocational truck since 2022 at about three thousand a year; the fleet should be roughly 20,000 in about three years (estimate). About 20,000 on North American roads today (estimate).

The T800 is a heavy-duty variant of the T600, built as both a semitractor and a straight truck and most popularly used as a heavy hauler and dump truck.

The Peterbilt 567 uses the cab of the 579 with the headlamps of the 389; a set-forward front axle option followed in 2015.

The M2 112 NG, introduced in 2009, was Freightliner's first compressed-natural-gas vehicle and used a Cummins ISL-G inline-6.