I just retired from GM Powertrain, building Northstar engines for Cadillac. The Cadillac engines are not currently DoD. Back in the 1980's, we did produce a engine ( 472 or 500? ) that was called the 8 - 6 - 4. This was phased out very shortly after maybe 2 years. The electronics of the day were not up to the task. I remember hearing that the engine tended to get a sticky solenoid valve, leaving the engine in 4 cyl mode. Since this was 5,000 lb car, it had a 0 to 60 time of maybe a week. The current GM DoD engines have computer controls on everything. It really helps on milage. I was told that at highway speeds of 70 mph, the average car is only drawing about 28 hp. So the engine is generally loafing at 70. So I can see how a tractor engine could power a vehicle, but you would probably not be impressed by the performance. It might take a couple of minutes to get to 70.
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Today's Featured Article - Third Brush Generators - by Chris Pratt. While I love straightening sheet metal, cleaning, and painting old tractors, I use every excuse to avoid working on the on the electrics. I find the whole process sheer mystery. I have picked up and attempted to read every auto and farm electrics book with no improvement in the situation. They all seem to start with a chapter entitled "Theory of Electricity". After a few paragraphs I usually close the book and go back to banging out dents. A good friend and I were recently discussing our tractor electrical systems when he stated "I figure it all comes back to applying Ohms Law". At this point
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