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Lithium iron phosphate can do more like 7C.
I have been using lithium iron phosphate batteries since 2010 and found that they suffer from really bad cold numbing and can be damaged if charged while cell temperature is 20 degrees F or colder.
The warp 11 motor is most efficient around 5,000 to 6,000 RPM if I remember correctly. If you try to run it too slow at cruising speed it will cook. So unless you have a rear diff with a 5:1 or 6:1 ratio direct drive may not be a good option.
All that comes down to speed, tire size and gear ratios.
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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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