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 - A Question for Dads This recent topic from the Tractor Talk discussion board is being highlighted because it is an awesome display of the caliber of individuals that have made this site their own. The young person asking questions received positive feedback and advice from total strangers who "told it like it is" with the care many reserve for their own kids. The advice is timeless... so although it isn't necessarily antique tractor related, it will be prominently displayed in our archives to honor those who have the courage to ask and those who have the courage to respond in an honest, positive manner.
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