Just about all of the buses, transit and over the road, built in the 50s, 60s and 70s were built by GMC Truck and Coach and all but the smallest, least expensive were Detroit powered. A relatively small number of smaller transit buses were built with Toro Flow engines, either diesel or gasoline, in the 60s and early 70s.
Most built in the 40s used 471s, while most built in the 50s use 671s. The 61/2? redesign used 6V71s for transit busses while over the road jobs used 8V71s.
The transit buses used Hydramatic 2 speed automatic transmissions, while the over the road jobs used mechanical four speeds.
When properly maintained, they smoked and leaked very little.
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Today's Featured Article - Hydraulics - Cylinder Anatomy - by Curtis von Fange. Let’s make one more addition to our series on hydraulics. I’ve noticed a few questions in the comment section that could pertain to hydraulic cylinders so I thought we could take a short look at this real workhorse of the circuit. Cylinders are the reason for the hydraulic circuit. They take the fluid power delivered from the pump and magically change it into mechanical power. There are many types of cylinders that one might run across on a farm scenario. Each one could take a chapter in
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