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Old 04-08-2011, 08:05 PM
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Replace Ford generator with GM alternator???

Anyone done this??
I seem to recall a post somewhere that showed this, but cannot find it.

I just inherited a 64 Ranchero and it has some generator issues according
to my aunt's neighbor (who was commissioned with the task of getting
the car running after several years of sitting).

Thought I saw somewhere the instructions for doing this and the mounting of the alternator as well.

Another option, I suppose, would to be to locate the brackets for a 65+ Alternator equipped car and use a Ford alternator---but still
need the support in the "get it wired correctly" category.

Car should arrive to me by the end of the weekend, so I will have a couple of days to think this out before my next scheduled work travel.

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Old 04-08-2011, 08:38 PM
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generator

if you want to swap out the old generator for an alternator, it is fairly easily done. i would recomend to keep all the old stuff in case someday you want to sell the car and the buyer wants it to be stock.
the gm alternator you want is one with a built in regulator from something in the '70's. there will be a bolt type connection on the back and a rectangular plug on the side. if you gat one at a wrecker ask for the plug for the side and the rubber cover for the bolt type connection, or buy a new one at napa. the bolt type connection goes to the battery, one of the other connections goes to the ignition switch or fuse panel "hot in run only" connection, and the third one goes to the charge light on the dash cluster. I have that wiring diagram somehere, but if in doubt check a wiring diagram from a 70's chevy product.the alternator can be spun either direction so that is one reason why a lot of hot rodders like them. you will likely have to fab up some mounts, but may be able to use some of the original stuff, if you don't mind cutting it up (there goes that "stock" later thing). just make sure the pulley has the same width and when it is all done the pulleys should line up. if you gat one of these at a wrecker, look on the side of the alt, near the mount or pivot, it will be stamped with the output in amps. look for one that is from a car with ac, they had more output.
if you go with a ford unit you will need a seperate voltage regulator and the wiring plug etc. more work. another reason lots of guys use the gm stuff.
good luck,
dsraven
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Old 04-08-2011, 08:52 PM
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You may want to check with Summit Racing, Jegs, etc. There are some one wire alternators out there that fit Fords with built in regulator. Wiring should be fairly easy. I think there Tech people should be able to walk you through it.
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Old 04-09-2011, 03:46 AM
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IMHO Ford makes a better alternator than GM. I would not choose a GM over a Ford, if you get the proper Ford. I'm having a senior moment to remember the model number but I get the ones from 90s, Mustang or Econoline so they mount properly, one wire installation.
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Old 04-09-2011, 05:14 AM
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GM alts 10SI and 130SI
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Old 04-09-2011, 06:29 AM
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Geeze,
Now I am having a "moment"

I have been acquainted with this car since I was about 5 years old,
but cannot recall if it is a 64 or a 65

My aunt and her son-in-law mention 'generator'
But I am absolutely positive the fender badges have HIGH PERFORMANCE 289 on them.

289 did not show up until 65 in the smaller cars????
Generator was replaced with an alternator in 65, right??

My old 65 Mustang had an alt------a 64-1/2 Mustang at my friend's bodyshop
has a generator.

Well----if the car is a 65 and has an alternator---no brainer---replace the alt.

Guess I will find out for sure Sunday afternoon when the car gets here
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Old 04-09-2011, 09:00 AM
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I wouldnt bastardize the thing witha GM alternator.Keep it all ford.Where a GM aternator is great for a street rod, it has no place on an original grocery getter like the one you are talking about.Look here at this. It should make it simple.Straight outa motors VIA epson scanner
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Old 04-09-2011, 09:05 AM
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whoops wrong file(lol)
Try this
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Old 04-09-2011, 09:19 AM
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looks like 64 generator...65 alternator...yup.
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