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Aod To C4 Swap...

  • Thread starter Thread starter MY 85 GT
  • Start date Start date May 13, 2013

MY 85 GT

10 Year Member
Mar 7, 2008
1,852
208
104
New Jersey
May 13, 2013
#1
  • May 13, 2013
  • #1
Anyone here do this swap?...i lost 3rd and OD in my AOD..i just dont know if i feel like re-building the AOD..I can get a c4 that is rated at 1000 hp andd a complete bolt in for my car just needs a shifter and flex plate...I just hear bad and good about the c4 any input would be great thanks...
 

pearlnotchback

5 Year Member
Dec 18, 2011
319
44
59
Tennessee
May 13, 2013
#2
  • May 13, 2013
  • #2
I had a 90 gt back it the late 90's and it was an AOD car and a swapped it to a C4 and I loved it. If you dont mind loosing overdrive its the way to go. I had to make an extention for my crossmember due to the c4 being a little shorter but now there are adjustable crossmembers out there. c4's are strong transmissions and quite a bit lighter than aod's. I had a hurst quarter stick shifter and it fit nicely in the console and it looked wicked also. Even at 1/4 throttle it would leave a patch of rubber when it hit second. I used a 157 tooth flywheel, the driveshaft from the aod worked fine, Changed cooling lines and ran an external cooler and also you will need to run a vacuum line to the modulator valve and thats it.
 

MY 85 GT

10 Year Member
Mar 7, 2008
1,852
208
104
New Jersey
May 14, 2013
#3
  • May 14, 2013
  • #3
Thanks for the info...i dont think i need the vac line tho this is a full reverse manual valve body...it even has a trans brake...which im not hooking up right now...lol but there if i want to...it comes with a cross member and a 3500 stall convertor from UCC...i think im going to do it..lol...
 

pearlnotchback

5 Year Member
Dec 18, 2011
319
44
59
Tennessee
May 14, 2013
#4
  • May 14, 2013
  • #4
MY 85 GT said:
Thanks for the info...i dont think i need the vac line tho this is a full reverse manual valve body...it even has a trans brake...which im not hooking up right now...lol but there if i want to...it comes with a cross member and a 3500 stall convertor from UCC...i think im going to do it..lol...
Click to expand...
Go ahead and hook up the trans brake. It should make for one hell of a show at a red light
 
Reactions: toolow91

TOOLOW91

If you're the village idiot what's that make me?
20+ Year Stangneter
Nov 29, 1999
8,483
8,687
234
S.I.NY
May 15, 2013
#5
  • May 15, 2013
  • #5
hook up the brake ! you won't regret it , as far as converters I would make some calls and ask around 3500 may be a bit high for what u use it for you may need like. a 2500-2800 but don't quote me


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MY 85 GT

10 Year Member
Mar 7, 2008
1,852
208
104
New Jersey
May 15, 2013
#6
  • May 15, 2013
  • #6
toolow91 said:
hook up the brake ! you won't regret it , as far as converters I would make some calls and ask around 3500 may be a bit high for what u use it for you may need like. a 2500-2800 but don't quote me


Sent from my iPhone using my fingers
Click to expand...

I think it might be a little high too..but he said that it should stall lower being my set-up is different..so it might go down to like 2800-3000 if its to high its a UCC convertor i can pull it out and they will re-stall it for me...

I dont know if im going to hook the brake up until after i do the suspension...it is a convertible i dont have the cage even in yet...lol...
 

TOOLOW91

If you're the village idiot what's that make me?
20+ Year Stangneter
Nov 29, 1999
8,483
8,687
234
S.I.NY
May 15, 2013
#7
  • May 15, 2013
  • #7
Hook it up and don't use it it's less work after the fact


Sent from my iPhone using my fingers
 

MY 85 GT

10 Year Member
Mar 7, 2008
1,852
208
104
New Jersey
May 15, 2013
#8
  • May 15, 2013
  • #8
toolow91 said:
Hook it up and don't use it it's less work after the fact


Sent from my iPhone using my fingers
Click to expand...
Yeah true...dumb question is how does it work..i know its an electric solenoid but how hard is it to hook up? i just wonder how much faster the car will be with the C4 in it...lol im sure it will be the AOD robs alot of power from what im told...
 

TOOLOW91

If you're the village idiot what's that make me?
20+ Year Stangneter
Nov 29, 1999
8,483
8,687
234
S.I.NY
May 15, 2013
#9
  • May 15, 2013
  • #9
i am not sure i have never actually wired one up


Sent from my iPhone using my fingers
 

TOOLOW91

If you're the village idiot what's that make me?
20+ Year Stangneter
Nov 29, 1999
8,483
8,687
234
S.I.NY
May 15, 2013
#10
  • May 15, 2013
  • #10
it will be much faster without the lag between shifts


Sent from my iPhone using my fingers
 

MY 85 GT

10 Year Member
Mar 7, 2008
1,852
208
104
New Jersey
May 15, 2013
#11
  • May 15, 2013
  • #11
toolow91 said:
it will be much faster without the lag between shifts


Sent from my iPhone using my fingers
Click to expand...


Cool i dont know what it ran with the AOD..lol..so nothing to base it with..im hoping for mid 11's i will be happy with that.
 
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