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A more powerful version, the T8E1 (U.S. Army 5137225), was powered by two all-aluminum 1100 cu.in. (18L) 450 horsepower (@2,600rpm) Ford GAA V-8 tank engines featuring dual overhead camshafts and 4 valves per cylinder. Paired with Allison Torqmatic transmissions, it had a top speed of 31 miles per hour. The Mack T8E1 could carry a 40-ton payload cross-country and weighed 92,400 pounds. The tire size grew slightly from the original T8 from 21.00-28 to 21.00-29. The driver of the front unit had control of the power and braking for both units (the rear driver could override the controls if necessary). While the front unit could be detached, it was the rear unit that was designed to be detached in normal use for loading and unloading. Note how the "E1" variant of the T8 series has a radiator that protruded from the front cab panel.

The Mack Trucks T8 series of tank transporters resulted from a new U.S. Army requirement in 1942 for a double-ended design with significant off road capabilities. Once again, the U.S. Army gave the challenging assignment to Mack Trucks. Mack Trucks produced three Mack T8 series tank transporter during the 1945-1946 period and all were extensively tested at Aberdeen Proving Grounds in Maryland. The Mack T8’s front and rear four-wheel drive tractor modules were powered by two 1,090 cu.in. (17.8L) 240 horsepower (@ 2,000rpm) Hall-Scott 440/441 engines coupled to Spicer three-speed torque converter transmissions. Steering was accomplished via differential control. Each unit had a 30-ton winch and 200 gallon fuel tank. Minimum ground clearance at the axles was 20 inches. The Mack T8 could carry a 35-ton payload cross-country and weighed 99,100 pounds. Tires were 24 ply size 21.00-28.

Mack Trucks - Trucks · Buses · Fire Apparatus

Mack Trucks - Allentown production .

Mack Western - Hayward, California "The Truck Capital of the West" .

Of course, Mack was no more a stranger to tracked vehicles than it was to rolling stock. Note the Mack AC cab, hood and radiator on the 4-ton Mack "Roadless" truck. .

Exactly. Look at the innovation in that drive system. Can today's engineers do that? So many of today's designs are not all-new, but rather refinements based on the foundation of all-new innovations from previous eras.

When doing business with the U.S. military in the 50s and 60s, that was the way. And in all fairness, the products that emerged under that system were usually impressive. With today's available research technologies, the design process is now different.

Mack FCD rail buses (light rail cars) still in service decades later with Sperry Rail Service. .

Mack promotional photographs of the first and second generation Mack FCD rail buses (light rail cars).

The Mack Trucks T19 .

The Mack TrucksT1 experimental gun motor carriage (Note the Mack Trucks vehicle identification plate on the right side of the steering column in the second photograph)

The Mack Trucks T3 .

The Revolutionary Mack MB-3 8x8 Aircraft Fire Fighting “Crash” Truck .

Mack Trucks' model 6-CQ-4S hybrid transit bus prototype operated by Public Service Coordinated Transport of New Jersey as unit #3100.