• Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • Fox 5.0 Mustang Tech

what is this alt. maybe a 3g

  • Thread starter Thread starter dastang2
  • Start date Start date Jul 8, 2004

dastang2

Active Member
Dec 11, 2003
2,020
0
46
tx
Jul 8, 2004
#1
  • Jul 8, 2004
  • #1
i am using an alternator of of a 91 5.0 tbird. does anybody know what type of alt. it is. is it the 3g alt. like the 94 and up mustangs have. it sure looks the same but i was told differently. how many amps does the 3g put out. i am going to hook up some electric radiator fans. i have no radio so that won't be wasting any power.will the tbird alt. if it is not the 3g alt., power 2 fans.
 

88stangmangt

Active Member
Nov 25, 2003
2,332
1
48
Stafford,VA
Jul 8, 2004
#2
  • Jul 8, 2004
  • #2
ya get a ramcharger fan supose to be the best......... just test the amps at idle i think the 3g's are supose to be 60 or so at idle.
 

dastang2

Active Member
Dec 11, 2003
2,020
0
46
tx
Jul 8, 2004
#3
  • Jul 8, 2004
  • #3
ramcharger, is that a brand name or is that the dodge ram charger ugly ass suv's. i already have 3 different fans from different vehicles. 1 is off of an 82 subaru and i am not sure what the other 2 are from. but i wanna use 2 unless 1 will work fine as i will test 1 and if it heats up i will go for 2.
 

88stangmangt

Active Member
Nov 25, 2003
2,332
1
48
Stafford,VA
Jul 8, 2004
#4
  • Jul 8, 2004
  • #4
no it is a universal fan that is popular for stangs it pulls probmore than all 3 of those fans it pulls almost 2k cfm's... that is awesome only elec fan i would buy.
 

dastang2

Active Member
Dec 11, 2003
2,020
0
46
tx
Jul 8, 2004
#5
  • Jul 8, 2004
  • #5
how much is it, ya know. 1 of my fans is very powerful. it tries to fly away like a remote control helicopter when i am holding it. i could probably put a remoter sensor on it and fly it around the house if i had the need to. do you know anything about the alt. question though.
 

88stangmangt

Active Member
Nov 25, 2003
2,332
1
48
Stafford,VA
Jul 8, 2004
#6
  • Jul 8, 2004
  • #6
i beleive ford did wake up and bump them up to the 3g's starting in 94 the fan runs about i think mid to high 100's
 

dastang2

Active Member
Dec 11, 2003
2,020
0
46
tx
Jul 8, 2004
#7
  • Jul 8, 2004
  • #7
i wonder what my tbird had. it plugged right into my 89's alt harness. my 89 used to be a 4 banger before i got it. i finished the conversion. the tbird alt. looks just like my 95 stang's. they both have the grey regulator on the back and the exact same plugs as my tbirds. is it possible maybe ford made a different type that looks like the 3g.
 
R

ratrapp

New Member
Apr 24, 2004
510
0
0
buena vista,va
Jul 8, 2004
#8
  • Jul 8, 2004
  • #8
did it have 2 connectors on the alt.?because most 3ga i've seen you had to cut off one the connectors off and add ring connectors to hook it up.you probably don't have a 3ga if you didn't have to do this.
 

dastang2

Active Member
Dec 11, 2003
2,020
0
46
tx
Jul 8, 2004
#9
  • Jul 8, 2004
  • #9
you may have to explain a bit more in detail about what you just said. the alt. just plugged right in to the 89's alt. harness. the harness consists of 3 connectors. 1 big one that plugs on the rear of the alt. but on top. it plugs into the gray regulator. then there is a plug next to that that plugs to the alternator itself and it is just a little 1 wire plug. and then on the back of the alternator there is a stud where the battery power is bolted to. like i said it looks like the alt. on my 95 v6 mustang. if the 95 is infact a 3g and the alt. i am using on my 89 is not then all i have to do is go to the junkyard and get an alt. from a sn95 stang and simply plug it right in, right
 
R

ratrapp

New Member
Apr 24, 2004
510
0
0
buena vista,va
Jul 8, 2004
#10
  • Jul 8, 2004
  • #10
the factory 89 only had 2 hookups.one on top and the one on the bottom.the bottom is for the voltage regulator and you don't have to change that.but a 3ga style alt. uses the bottom regulator plug but uses a stud and a small single plug in at the top(rectifier).a smaller amp 3ga will drop into the stock alt. bracket but the larger 130amp and bigger alt. requires grinding the bracket for it to fit properly.you would also need to add the larger charging wire or you will experience a wiring meltdown.
 

dastang2

Active Member
Dec 11, 2003
2,020
0
46
tx
Jul 8, 2004
#11
  • Jul 8, 2004
  • #11
well here is another difference. i am using the top alternator bracket off of my 76 mustang II. and the bottom is off of a chevy. i use v belts. my 89 also used to be a 4 banger. is the 4 banger alt. different than the 5.0's alt. in 89. all i know is there is 3 hookups to the wiring harness that was already in the 89 when i got it without a motor or tranny. is it possible that somebody already did the 3g swap and left the wiring harness in the car and the 91 tbird's alt. just so happened to plug into the same wiring harness
 
R

ratrapp

New Member
Apr 24, 2004
510
0
0
buena vista,va
Jul 8, 2004
#12
  • Jul 8, 2004
  • #12
it sounds like somebody already wired it for a 3ga but i don't think that a 91 t-bird alt.is the big 130 amp your looking for.it's probably a 90 or100 amp(still bigger than stock)if you add the 130 you need to go to pa -performances web site and get their upgraded wiring package.
 

dastang2

Active Member
Dec 11, 2003
2,020
0
46
tx
Jul 13, 2004
#13
  • Jul 13, 2004
  • #13

this is the alt. i have.
 

dastang2

Active Member
Dec 11, 2003
2,020
0
46
tx
Jul 13, 2004
#14
  • Jul 13, 2004
  • #14


this is it without the grey voltage regulator.
 
You must log in or register to reply here.

Similar threads

What's your tow rig?
  • LILCBRA
  • May 31, 2026
  • Other Auto Tech
Replies
3
Views
130
Other Auto Tech May 31, 2026
LILCBRA
M
Resolved 1988 Foxbody - Overheating Summer
  • MDrisc
  • Oct 26, 2025
  • Fox 5.0 Mustang Tech
Replies
16
Views
653
Fox 5.0 Mustang Tech Friday at 12:37 PM
fasterthangas
F
Electrical Mini-Starter Wiring
  • RekeHavoc
  • Jul 25, 2025
  • Fox 5.0 Mustang Tech
Replies
10
Views
1K
Fox 5.0 Mustang Tech Aug 24, 2025
Mustang5L5
F
Electrical From scratch: alternator wiring
  • fox racer v2
  • Jun 23, 2025
  • Fox 5.0 Mustang Tech
Replies
0
Views
568
Fox 5.0 Mustang Tech Jun 23, 2025
fox racer v2
F
For Sale Borg Warner WC T5, Stock Bell Housing, RAM Clutch Set, Double Hump Cross Member, & Pro 5.0 Shifter
  • AeroCoupe
  • Aug 9, 2025
  • Drivetrain Parts
Replies
1
Views
608
Drivetrain Parts Dec 26, 2025
AeroCoupe
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • Fox 5.0 Mustang Tech
Menu
Log in

Register

  • Forums
  • What's new
  • Media
  • Resources
  • Contact
  • Sponsor
X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?

X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?