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Is that even possible? Make enough power with a kubota at that rpm to go 70mph?
In factory configuration most of the 3 cylinder engines are around 1L or less and only make 10 to 12 horsepower.
Now if you turbocharged it then you would get another 10 to 20 % more horsepower and fuel economy.
I think you might need more horsepower if you want to maintain the speed limit on anything but level or down hill ground. Every 1% of grade increases power requirement around 20% to maintain your speed at 60 to 65 mph.
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1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
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