75 amp alternator?
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Laughing Gas
Joined: Mar 2009
Posts: 1,028
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From: long island
75 amp alternator?
my truck needs a new alternator. all my local parts houses have a listing for 60, 75, and 80 amp alternators but nobody actually stocks the 80 amp one. can i put in the 75 amp without problems? my truck has all the electrical options and a subwoofer. i dont know how many amps the old alt is.
Logistics Pro
Joined: Jul 2009
Posts: 3,635
Likes: 3
From: Lansdale, PA
I don't know if you can do the 3G alt on the 300-6 or not. Look around and see. That will be a 150a alt.
Or just look at the wiring of each alt. usually though between a 65 and 75 they put a smaller pulley and it's the same alt. sorta quick heck is for on the older style alts stamped original rating on the housing.
I bought a 100a on eBay for 60$ shipped. Same frame and wire plug.
Or just look at the wiring of each alt. usually though between a 65 and 75 they put a smaller pulley and it's the same alt. sorta quick heck is for on the older style alts stamped original rating on the housing.
I bought a 100a on eBay for 60$ shipped. Same frame and wire plug.
pedant
Joined: Jan 2008
Posts: 23,576
Likes: 38
From: EXTREME southwest CT
Sure you can swap a 3G into an I-6.
You will have the choice of 95(four hole) or 130A(two hole) alternators.
You also will need a new charge cable, a mega-fuse or circuit breaker and adapt your regulator plug to the new configuration.
You will have the choice of 95(four hole) or 130A(two hole) alternators.
You also will need a new charge cable, a mega-fuse or circuit breaker and adapt your regulator plug to the new configuration.
Logistics Pro
Joined: Mar 2012
Posts: 3,507
Likes: 121
From: Oregon
You can do a 3G swap on the 300. You need the 8.25" ear spacing alternator. They are found in some 90, any 91-92, and any 93-95 3.8 Taurus. The do require a slightly changed mounting position, but still use the factory bracket. Here is how its mounted:
Elder User
Joined: Jan 2011
Posts: 784
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From: Over the hump in Pahrump
my truck needs a new alternator. all my local parts houses have a listing for 60, 75, and 80 amp alternators but nobody actually stocks the 80 amp one. can i put in the 75 amp without problems? my truck has all the electrical options and a subwoofer. i dont know how many amps the old alt is.
As per request: The almost famous 3G Alternator Interchange - The Web Wheeler
Check this out... and there is plenty more on FTE and others Dave
Elder User
Joined: Jan 2011
Posts: 784
Likes: 0
From: Over the hump in Pahrump
my truck needs a new alternator. all my local parts houses have a listing for 60, 75, and 80 amp alternators but nobody actually stocks the 80 amp one. can i put in the 75 amp without problems? my truck has all the electrical options and a subwoofer. i dont know how many amps the old alt is.
As per request: The almost famous 3G Alternator Interchange - The Web Wheeler
Check this out... and there is plenty more on FTE and others Dave
SORRY ABOUT THE DOUBLE POST ... "UNCONTROLLED MOUSE SYNDROME"
Logistics Pro
Joined: Jul 2009
Posts: 3,635
Likes: 3
From: Lansdale, PA
This guy has new 3G alts as well
B.C. Broncos - Early Bronco Charging & Starting - products new home - 3G harness non EFI
B.C. Broncos - Early Bronco Charging & Starting - products new home - 3G harness non EFI
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pedant
Joined: Jan 2008
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From: EXTREME southwest CT
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Senior User
Joined: Apr 2012
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From: Fort Worth, Texas
Actually here is one where everyone in this thread has posted. Also this is at the top in Tech Tips for this very forum. ALOT of great info in there. I would suggest reading through this link and all the links posted in it.
https://www.ford-trucks.com/forums/1...doing-one.html
https://www.ford-trucks.com/forums/1...doing-one.html
Elder User
Joined: Jan 2011
Posts: 784
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From: Over the hump in Pahrump
A LOT OF US HAVE DONE THIS !!!
my truck needs a new alternator. all my local parts houses have a listing for 60, 75, and 80 amp alternators but nobody actually stocks the 80 amp one. can i put in the 75 amp without problems? my truck has all the electrical options and a subwoofer. i dont know how many amps the old alt is.
Senior User
Joined: Apr 2012
Posts: 425
Likes: 1
From: Fort Worth, Texas
You are earing the best advice here man I had 3 75 amp alternators burst into flames before I did it and couldn't be happier now. In fact I bet if you have the 75 you occasionally on a hot day smell something like an electrical fire but can't find it and if you look real close at the charge connector on your 75 I'll bet a case of beer it looks burnt. Do the upgrade for peace of mind.
Thread Starter
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Laughing Gas
Joined: Mar 2009
Posts: 1,028
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From: long island
thanks for all the advice about the upgrade. ill definitely be looking into it, however i just put a cheap 75 amp alternator in for now because i was so desperate to get the truck going. its so easy to pop the alt in and out so i dont mind experimenting.
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