Re: Mack trucks

Posted by wildcat445 on February 05, 2019 at 09:01:30 from (98.177.218.92):

In Reply to: Mack trucks posted by SVcummins on February 04, 2019 at 21:38:35:

Thermodyne was the terminology for non-turbocharged Mack diesel engines. Maxidyne was the turbocharged engines. I learned to drive truck on a B-61. The cab was small, so the visibility was not very good. The worst part about the '61's was the transmission. Trplex or Quadraplex twin stick jobs. I did not like those. The B-75 introduced the 250 horsepower turbocharged 6-cylinder Maxidyne diesel with the Maxitorque five-speed gearbox, in 1966. Lots easier to drive, but still a pretty slow truck. I personally preferred the R models. Lots bigger cab with more glass and better visibility. They also had a tilt hood, making it easier to work on the engine. The engine in a B-model laid at a slant with the stuff you worked on most on the bottom. The B-models were easier to make look really sharp than the R-model. The B-75 is the nicest looking Mack ever built, in my opinion. You were either a Mack driver or you hated them. If you drove a Detroit or a Cummins with a 13-speed gearbox, you probably did not want to drive a five-or-six-speed Mack. I had a '78 R-model with the 375 V-8 that would pull like a bull to 74 mph. The limit to that truck was the pyrometer. I had a trucking buddy who put a Cummins 335 into an old B-61. That was quite the truck.

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