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Old 05-10-2007, 11:55 AM   #1
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3G Upgrade

Just wondering if anybody on this board have done this swap? Any input on doing the swap or is it honestly really easy? Suggestions and so forth?

Im gonna be using this as my guideline. The 3G Alternator Project / Mustang Central.net 130 amp alternator upgrade

Gonna just go to the JY and find a 94+ Alt., Also just ordered my PA Perf. Wire upgrade kit Welcome To PA-Performance 1.877.471.8010
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Old 05-10-2007, 12:35 PM   #2
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Re: 3G Upgrade

Its not bad at all... I actually did a 6G (2000 V6) Upgrade... The 3G isnt much different - the reason i went with the 6G was because there isnt supposed to be any kind of bracket modifying to be done. I still did some on mine, but it works just fine. Good luck, and post if you have any trouble, or let us know how it goes!
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Old 05-10-2007, 05:04 PM   #3
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Re: 3G Upgrade

I've done it. Grinding the bracket was a pain, but other than that it wasn't bad. I got mine from PA Performance with their wiring kit as well.
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Old 05-11-2007, 08:32 AM   #4
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Re: 3G Upgrade

both of my 5.0's have 3g's. i used an electric grinder with a 1/2" thick wheel, took less than 2 min. to grind clearance in the bracket...not sure y it was a pain in the *** for bbunt. i had the bracket ground down, alt. wired and installed in less than 30 min. it's very easy. u will have to use your original pulley if u use a junk yard unit. the 3g pulley uses a wider belt. i paid $15 dollars for mine at "pick-n-pull"...it's freak'n awsome. i would cut the plugs from the donor car if i were u. i forgot to and had to make my own harness when i got home. i got enough juice for my subs and msd...best $15 bucks i spent.
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Old 05-11-2007, 10:30 AM   #5
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Re: 3G Upgrade

I know a couple of guys who did it to their old 5.0s and absolutely loved it once it was done. One of them said it was the best upgrade he did next to subframes.
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Old 05-14-2007, 07:25 AM   #6
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Re: 3G Upgrade

im about to do mine, i went with a remanu, 150amp unit. just because its pretty and looks new, you can pull them from junk yards as SVT said
this site helped me alot so far

http://www.geocities.com/smithmonte/...or_Upgrade.htm
not that this guy has said anything that everyone else didn't, but he has very detailed electrical scematics, and goes into much detail about 3G itself.
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Old 05-14-2007, 07:32 AM   #7
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Re: 3G Upgrade

i'll say again...the best 15 bucks i ever spent. no more run'n rich at idle...saved me money on plugs too...lol
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Old 05-17-2007, 12:33 AM   #8
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Re: 3G Upgrade

It's a good way to go. I got rid of a lot of little gremlins with the 3G upgrade in my 90 coupe. Just some comments:

- If you get a 3G for a 94/95 Mustang the pulley it comes with will be correct. The original pulley is not correct on the 3G and will not line up quite right.
- You can buy a remanufactered alternator at an auto parts store with a warranty, then when you run 8000 RPM a few times and burn it up, you can get a new one for free.
- You should use a fuse or breaker in the main power harness in case something goes wrong.
- Whatever you do, don't use the factory 10 gauge power wires, or you run a serious risk of a wiring fire. Run a new 4 gauge wire over to the starter solenoid.
- The bracket modification takes about 2 minutes with a carbide bit on a die grinder - No problem.
- If you are desperate to save weight, like a road racer friend of mine, the 6G is a little lighter. You can get one out of a super coupe.

Good luck.

-Matthew
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Old 05-17-2007, 12:41 PM   #9
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Re: 3G Upgrade

damn, matt knows his ****. my motor won't see more than 6250rpm...but kudos to the guy dats tach'n out @ 8 grand. now, all we have to do is start a thread for doing a formula 1 motor swap into a fox..dat's like 25,000rpm...kinda of a mind blow'n #.
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Old 05-17-2007, 02:42 PM   #10
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Re: 3G Upgrade

Quote:
Originally Posted by Matthew View Post
It's a good way to go. I got rid of a lot of little gremlins with the 3G upgrade in my 90 coupe. Just some comments:

- If you get a 3G for a 94/95 Mustang the pulley it comes with will be correct. The original pulley is not correct on the 3G and will not line up quite right.
- You can buy a remanufactered alternator at an auto parts store with a warranty, then when you run 8000 RPM a few times and burn it up, you can get a new one for free.
- You should use a fuse or breaker in the main power harness in case something goes wrong.
- Whatever you do, don't use the factory 10 gauge power wires, or you run a serious risk of a wiring fire. Run a new 4 gauge wire over to the starter solenoid.
- The bracket modification takes about 2 minutes with a carbide bit on a die grinder - No problem.
- If you are desperate to save weight, like a road racer friend of mine, the 6G is a little lighter. You can get one out of a super coupe.

Good luck.

-Matthew
sweet deal thanks for all the info there
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Old 06-03-2007, 10:04 AM   #11
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Re: 3G Upgrade

Got mine out of the junkyard for dirt cheap, and works great. Another vote for the Smithmonte site, lots of good info there.
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Old 06-06-2007, 10:54 PM   #12
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Re: 3G Upgrade

Quote:
Originally Posted by svtlx View Post
damn, matt knows his ****. my motor won't see more than 6250rpm...but kudos to the guy dats tach'n out @ 8 grand.
You can see it run 8000 RPM in every gear here:

Tecmotion - Race Program

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