Mack B series
The Mack B series is a model line of trucks produced by Mack Trucks between 1953 and 1966. The successor to the 1940-1956 Mack L series, the B-series was a line of heavy conventional-cab trucks. Adopting a more streamlined appearance over its predecessor, the B-series was designed with a sloped windshield and larger, rounded fenders The model line was sold in multiple configurations, including tractors and straight/rigid trucks, cowled chassis, or fire trucks.
During 1966, Mack replaced the B-series with the Mack R-series, which lasted into the 21st century. In total, 126,745 examples of the B-series were produced over 13 years.
Model numbers &; letters
Chassis model designations:- B1x -
- B2x -
- B3x -
- B4x -
- B5x -
- B6x -
- B7x -
- B8x -
- B9x -
Engines
The B Model offered 10 different gasoline engines, from a with in the B20 to a with in the B70.A wide range of diesels were also offered. From the B61 up to the ENDT 673 turbocharged I6 and END 864 V8 were offered. From the B73 up to the Cummins I6s up to the NTC335 were available.
The table shows the largest gasoline and diesel engines in the series.
| Model | Engine | Displacement | Type | Horsepower | Torque |
| B20 | EN291 | G I6 | at 2800 | at 1400 | |
| B30 | EN331 | G I6 | at 2800 | at 1400 | |
| B4X | EN414 | G V8 | at 4000 | ||
| END673 | D I6 | ||||
| B53 | END673 | ||||
| B6X | EN540 | G I6 | at 2400 | at 1300 | |
| ENDT673 | TD I6 | ||||
| END864 | D V8 | ||||
| B7X | EN707 | G I6 | at 2100 | at 1200 | |
| NTC335 | TD I6 | at 2100 | |||
| B8X | EN707 | ||||
| NTC335 |