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The F Model offered 5 different diesel engines, Mack's Maxidyne and Thermodyne at 260-375 hp, Cummins - 250-350 hp, Detroit Diesel - 270-430 hp and Caterpillar - 325 hp. Cat3406 is a big-bore diesel available in both high-torque-rise and conventional torque-rise versions; Detroit Diesel 71 series, provided power with a high torque curve.
The standard engine was the EN310 (Mack) 6 cylinder L-head petrol engine, a Buda Engine Co. 6DT389 diesel was available. Some modified EH and all military design trucks had an EN354 engine, a 354 cu in (5.8 L) L-head inline 6 cylinder gasoline engine developing 110 hp (82 kW) at 2800 rpm and 200 lbf⋅ft (271 N⋅m) of torque at 1150rpm.
The LR is available with a Mack MP7 diesel, Cummins Westport natural gas engine, and since 2020, an all-electric drivetrain. [3] [4] The Mack MP7 is the base engine in the LR. It is a 659 cubic inches (10.8 L) overhead cam turbocharged inline six-cylinder diesel engine. It develops 325 to 425 horsepower (242 to 317 kW) and 1,260 to 1,560 pound ...
The B-series was the first Mack truck produced with a diesel engine, introducing the Mack-produced Thermodyne inline-6 in 1953. [1] During 1966, Mack replaced the B-series with the Mack R-series, which lasted into the 21st century. [3] [4] [5] In total, 126,745 examples of the B-series were produced over 13 years. [6]
This allows less shifting and smoother power "on the ground" when accelerating. Most MR series had Maxidyne engines. The Mack E6 was a 672 cubic inches (11.0 L) turbocharged inline six-cylinder engine. it developed 200 to 350 horsepower (150 to 260 kW). The Mack E7 was a 728 cubic inches (11.9 L) turbocharged inline six-cylinder engine. It 1998 ...
The Mack R series (also known as the Mack Model R) is a series of trucks that was manufactured by Mack Trucks from 1966 to 2005. The successor of the Mack B series , [ 2 ] the R was a heavy-duty truck (Class 8) with a conventional (bonneted) cab configuration.
A Cummins B6.7L diesel engine is used. It is a 6.7L turbocharged inline six-cylinder engine. It develops 220 to 300 horsepower (160 to 220 kW) and 560 to 660 pound force-feet (760 to 890 N⋅m) of torque. An Allison 6-speed transmissions is used. They are fully automatic planetary gear transmission with a lock-up torque converter.
1956: Mack buys the tooling of the Ahrens-Fox Fire Engine Co. and introduced the Mack C Model cab forward fire engine which was an Ahrens-Fox design and the first of the "Cincinnati Cabs" ( later built by the Truck Cab Manufacturing Co. an OEM vendor builder of Cincinnati, Ohio), that have been the staple of the American fire service to this day.