🚀 go-pugleaf

> I have a 63 Ford model 4000 tractor. This is a full size agricultural
> tractor. It has a standard starting system and ignition system, the
> components are:
> 
> 		6v generator
> 		6v starter
> 		voltage regulator
> 		6v ignition coil
> 		6v lights
> 		6v starting solinoid (external to starter)
> 
Not to mention a 6V battery. :-)

> 		1) can I use a straight 12 volts on this critter without
> 		   a premature meltdown (what would the voltage drop be,
> 		   etc.)

You already stated that it works on 12V (when jumping it).

> 
> 		3) since the system is positive ground, can the case polarity
> 		   of the DELCO alternator be reversed or can the starter
> 		   be operated reverse polarity (since it is a D.C. motor
> 		   I would expect it to run the other way?)

If you're going to change everything else, why not make it a negative
ground?  Dismantle the starter and switch the hot and ground wires.