3G alternator upgrade
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Senior User
Joined: Aug 2008
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From: on the garage floor. lol!
3G alternator upgrade
Wats up guys n gals its been some years since I been here life took over with 3 kids. I would like to upgrade my alternator from the stock 75 amp to a 130 amp on my 94 flareside. Does anyone know who builds better alternator charging systems n the wires for the upgrade along with fuse . My alternator uses 3 bolts to hold it in place planning to run an electrical dual fan upgrade. thanks in advance for the help everyone. stay healthy from this covid 19.
Logistics Pro
Joined: Mar 2011
Posts: 4,197
Likes: 558
From: Central Wisconsin
You can make the wiring for the bigger alternator yourself. I sourced a 130 amp alt. from a local salvage yard for like 30 bucks. I believe there was a write up on this forum that laid out exactly what you could source an alt. from and exactly what the wiring needed to look like, and that's what I followed when I installed mine.
Posting Guru
Joined: May 2010
Posts: 1,146
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From: Central Indiana
Power*******s for the harmess, make it yourself or as said above, go to the JY and get that '97-03 V8 harness. For big power, find a JY ambulance E350-450. It will have a big alt in it so that might be a source. I found a 220A alt in a 2006 E350 gasser ambulance but somebody already got the harness.
More Turbo
Joined: Jul 2003
Posts: 566
Likes: 5
From: SC
Is the 1995-98 F350 7.3 alternator physically larger? I;ve wondered. One caught my eye as being the same configuration as my '94 F150. I know the wiring is the same so it would be plug and play there. I suspect the bolt spacing is wider or something? I've never looked into it. I've swapped other style 3G's and those 130's are actually physically larger than the lighter duty ones.
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southern//magic
1987 - 1996 F150 & Larger F-Series Trucks
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Dec 16, 2007 12:14 PM
