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Topic Review (Newest First)
01-12-2011 04:43 PM
bigdog7373 Yup ,i agree with leaving it stock. It's cooler that way.
01-12-2011 04:28 PM
Joe G
Originally Posted by fast68
anyways are these trucks 6 volt and are they neg or pos grounded?
54 Ford trucks were 6 volt POSITIVE ground.

Originally Posted by fast68
if 6 volt then can i convert it to 12 volt very easily or do i have to swap starter and alternator out? what about the distributor? not worried about dash and guages stuff
You can use the 6v starter. It can take 12v for short spurts, and doesn't care about polarity.
To convert to 12v you will need to:
-Change out the generator and regulator, or convert to an alternator.
-Replace the battery.
-Install a voltage reducer on the gauge power circuit.
-Install a voltage dropping resistor on the heater motor.
-Install 12v ignition coil and a proper ballast resistor.
-Replace starter solenoid with a '56+ style 12v w/resistor bypass.
-Change starter button to '56 style (2 terminal that switches power side instead of single terminal that switches to ground) and rework wiring as necessary.
-Replace every light bulb in entire truck with 12v equivalent.

And of course, if your wiring looks at all questionable you will save a lot of headaches by replacing it. Stock reproduction harnesses for a truck like this are simple and therefore not very expensive.

I may be forgetting something, Hopefully someone will double check my post and correct me if I'm wrong.

All that said, If the truck is going to remain stock, I wouldn't convert it to 12v. With good wires, good switches/starter/gen/coil, and clean connections, 6v systems work just fine. I have seen many old cars that have been needlessly converted to 12v when all they needed was to have the wiring terminals cleaned up.

Good Luck...Hope this helps...
01-12-2011 04:10 PM
Deuce IF it is original ... it will be 6 volts. Ford did not go to the 12 volt systems until 1956.
01-12-2011 04:10 PM
fast68 hmm never thought of larger oiling rods hmmm are there any made or available for this engine?

i just read a thread on a ford truck forum and it said in the thread that its ok to use a 12 volt battery the starter will be fine but you need to change the charging system and all bulbs


what 12 volt alternators will fit on this old 239 and how would i wire it and a regulator too?
use a 60s or 70s one?
i could probably just rig a 70s or 80s internally regulated alternator on it

heck i put a 2000 taurus alt on my 91 s-10 4.3L so im sure i can easily put a chevy alt on this 239

thanks again
01-12-2011 04:04 PM
bigdog7373 cool truck. I would think is has an oil filter on it, just look around and try to find it. I don't know if it's 6 or 12 volt but i'm sure someone here knows. If it turns out to be 6 volt then you will need a new starter, alternator, and ign coil. As for the rocker arm oiling, try to find pushrods with larger oil holes (or whatever they're called).
01-12-2011 03:25 PM
54 ford truck questions

my great uncle is giving me a 54 ford 350 dually dump he has had for about 30 years or so

its been sitting parked not running for a long time but it does run good ill have to change oil(did these have an oil filter?) and put in new gas and battery and clean the points and the old 239 will run again

anyways are these trucks 6 volt and are they neg or pos grounded?

if 6 volt then can i convert it to 12 volt very easily or do i have to swap starter and alternator out? what about the distributor? not worried about dash and guages stuff

also how do you improve the oiling of the rocker arm shafts i read that this was an issue with these y blocks starting in 54 and that you have to run tubes from the oil pump to oil the shafts better somehow?

how do you do this?



its rough shape but can be used again but im not really sure what to do with it really other than make it run and park it until i figure out something hmm


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