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I did a quick search and there wasn't much on alternator selection.... The one that came out the truck is a motorcraft and I cant make the number stamp out, it looks something like "coaettfAA".... it has 16 stamped on it... There are a lot of choices for my setup.... I don't have any heavy electrical load accessories... Just a plane jane 1976 F250 4wd 360 turned 390... the alternator worked when I dissembled the engine, but it has black smoke/oil residue behind it and It falls under the 'may as well replace it' when reassembling the motor...... So what do you recommend for a replacement ? The AMP selection is all over the map from 60 to 100 ?
I did a quick search and there wasn't much on alternator selection.... The one that came out the truck is a motorcraft and I cant make the number stamp out, it looks something like "coaettfAA".... it has 16 stamped on it... There are a lot of choices for my setup.... I don't have any heavy electrical load accessories... Just a plane jane 1976 F250 4wd 360 turned 390... the alternator worked when I dissembled the engine, but it has black smoke/oil residue behind it and It falls under the 'may as well replace it' when reassembling the motor...... So what do you recommend for a replacement ? The AMP selection is all over the map from 60 to 100 ?
If stock and no planned heavy electrical loads like winch, sound system, electric cooling fan, or a bank of KC Daylighters, then a 60- to 65-amp alternator is all it needs.
I'm with HIO Silver.
That stock amperage is fine unless you are running a serious stereo system, and or lights all over the truck. But I'm also not, a fan of these 3G alternator upgrades. Without trying to power all of those accys, it's way more alternator than is needed.
I think the alternator I have on Ka'Bluey is 60 amps. No power options on the truck at all. Not even a radio, so I have more amperage than the truck really needs.
Electrical has never been a strength of mine, so thanks for the input, although I think by the time this project is done, I will have a good feel for it ......UBreal2 I see you also have a 2013 5.0 F150..... As do I, its a good brother to the Ol'e F250.....
Agree 60 amps with stock electrical loads is plenty. My truck has run most of its life with a 40 amp unit.
Only thing is, I am not sure the parts store remans are particularly reliable... even the "premium". Maybe because the cores for these are very old its hard to get a good one. If you go the reman route, I'd personally wrap up your old dirty but functional unit and put it behind the seat.
I upgraded mine to 100A to handle trailer brakes, trailer accessory power and possible future EFI. I picked a Summit one wire new unit. Ford style case with GM style guts. It bolted right in and has worked fine... with the old 40 amp unit behind the seat just in case.
Electrical has never been a strength of mine, so thanks for the input, although I think by the time this project is done, I will have a good feel for it ......UBreal2 I see you also have a 2013 5.0 F150..... As do I, its a good brother to the Ol'e F250.....
Yup, it's a sweet driver, really like that Coyote 5.0, 4x4. This one is Kodiak Brown with tan interior. Had to have that color since I've only seen 1 other here in town.
I'm also about to replace mine while in the middle of a different project. I don't want/need to do the 3g upgrade so I'm going with a reman unit from RockAuto. I see they have a few 70amp models without much of a price jump from 60amp so I'm going with that. Yeah I know their reliability isn't necessarily the best, but it is what it is. I think the one I pulled off the truck was from the factory which is damned impressive. It was so frozen to the bolts I had to cut it out with an angle grinder.
I was wondering, anybody know what the stock amperage is?
I'm sure the camper specials did take a beefier alternator... My ride is a basic F250, no heavy electrical load..... so a 60-70 amp will do just fine for me...
I'm sure the camper specials did take a beefier alternator... My ride is a basic F250, no heavy electrical load..... so a 60-70 amp will do just fine for me...
The 35-60 amp alternators are the Motorcraft "small case" the 70 amp is a "large" case alternator.
The large case uses a different wiring harness.
If you have a high output alternator and a 'light' electrical load, the system isn't going to use any more amperage from the alternator than is necessary to power the system and its devices. If the alternator is rated for 130 amps, this doesn't mean this is what it's going to be putting out everytime it's spinning over. This is its maximum output rating when under a full load.
Having a high output alternator gives you the flexibility for future mods on your truck, without having to constantly step up in alternator size. In all reality, it would not be unusual to be able to swap to a 3G for about the same, or in many cases for less, than what you would pay for a new, lower output, stock 1G alternator.
I maybe have $50.00 bucks in the 3G swap on my '69 F100.
Which alternator......
So what do you recommend for a replacement ? The AMP selection is all over the map from 60 to 100 ?
Thanks
......UBreal2 I see you also have a 2013 5.0 F150..... As do I, its a good brother to the Ol'e F250..... 
