The Mack B series is a model line of trucks produced by Mack Trucks between 1953 and 1966.Corporate History: 1950-1959 - Mack Trucks.com 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 (delivery body or bus), or fire trucks.
During 1966, Mack replaced the B-series with the Mack R-series, which lasted into the 21st century.Corporate History: 1960-1969 - Mack Trucks.com 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 -
Chassis letter guide: B - school bus chassis C - flat face cowl for the addition of a delivery body E - built for export F - fire truck chassis L - light weight or weight reduced by using aluminum components P - platform chassis (single axle straight truck) R - right hand drive. This designation was started in 1964 but right hand drive available S - six wheel chassis (tandem axle) T - tractor chassis X - severe or extreme service chassis
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. ModelEngineDisplacementTypeHorsepowerTorqueB20EN291G I6 at 2800 at 1400B30EN331G I6 at 2800 at 1400B4XEN414G V8 at 4000END673D I6B53END673B6XEN540G I6 at 2400 at 1300ENDT673TD I6END864D V8B7XEN707G I6 at 2100 at 1200NTC335TD I6 at 2100B8XEN707NTC335 (Type: G=gasoline, D=diesel, TD=turbocharged diesel)
See also Mack Trucks List of Mack Trucks Products
References
External links
Antique Mack truck forum Site specializing in B model information