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5 speed to Auto swap?

  • Thread starter Thread starter n.e.mich
  • Start date Start date Jan 6, 2010

n.e.mich

New Member
Sep 23, 2009
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Tawas City, MI.
Jan 6, 2010
#1
  • Jan 6, 2010
  • #1
I see a lot of threads where people a swapping their auto trans to manuals. How hard is it to go from a 5 speed to an Auto?
From what I have read, A new computer is needed as well? What else is needed and what would be a good strong tranny for the swap? Really not looking for an overdrive tranny, car is only driven locally will be at the track 5-6 times a summer.
Thanks in advance!!!!
 

Adam95GT

New Member
Aug 14, 2006
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Burlington, NJ
Jan 7, 2010
#2
  • Jan 7, 2010
  • #2
any reason?? Just really need the harness, puter, and trans parts i think it still uses the same ds... i dont know why you would want too if your not at the track that often...

I could understand if your a built index or bracket car and you want to run a c4 or something...
 

HISSIN50

"How long does it take to get help in here?
15 Year Member
Nov 29, 1999
31,179
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129
Jan 7, 2010
#3
  • Jan 7, 2010
  • #3
Will it be an E or mechanically controlled trans?
 

n.e.mich

New Member
Sep 23, 2009
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Tawas City, MI.
Jan 7, 2010
#4
  • Jan 7, 2010
  • #4
HISSIN50 said:
Will it be an E or mechanically controlled trans?
Click to expand...

Electrical or mechanical?

I would rather it be machanically controlled actually. Didn't know if it was possible though.
 

HISSIN50

"How long does it take to get help in here?
15 Year Member
Nov 29, 1999
31,179
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129
Jan 7, 2010
#5
  • Jan 7, 2010
  • #5
n.e.mich said:
I have no idea what you're talking about!
Click to expand...

Electronic trans (e.g., 4R70W) or mechanical trans (e.g., AOD, the C4 like Adam mentioned, etc).
 

n.e.mich

New Member
Sep 23, 2009
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Tawas City, MI.
Jan 7, 2010
#6
  • Jan 7, 2010
  • #6
HISSIN50 said:
Electronic trans (e.g., 4R70W) or mechanical trans (e.g., AOD, the C4 like Adam mentioned, etc).
Click to expand...

I would like it to be AOD like the C4.
 

BlackVert

15 Year Member
Oct 3, 2003
5,589
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98
Bethesda, MD
Jan 7, 2010
#7
  • Jan 7, 2010
  • #7
heh, not many people want to convert from a manual to an automatic, and even fewer decide to go to AOD as opposed to AODE.

so ours is a club with very few members! i have an AOD in mine

it is a fairly straightforward, but here are some of the things that come to mind off the top of my head:

an AOD needs a kickdown cable which is somehow attached to the throttle. as the throttle opens, it pulls the kickdown, increasing the line pressure. a SN95 doesn't have an attachment built into the throttle body for a kickdown, but there is a place where you can put a boss and you can get a cable from lokar. i have an old thread that has more details about it.

the thing here to know about is that the ratio of the radiuses of the connecting points determines how far the lever on the tranny moves as the throttle moves. i am not sure if my ratio is exactly right, but it seems correct to me.

if you are going carbed, then the whole kickdown thing is built in, but then you have other issues (related to converting from efi to carb) to deal with.

now, depending on the shifter you go with, there are different things to be aware of ...

if you want to use a stock shifter (i have a stock 94/95 AODE shifter right now), i should tell you that i had a really hard finding an shifter cable for the AOD, and i ended up spending too much money for one from a JY that has an issue.

because of the above, i decided to get a lokar shifter which comes with a new cable and an adjustable lever so you can make sure the shifter lines up with the crow's foot in the tranny. it has been sitting in my trunk for 6 months now waiting for me to get around to doing something with it.

in either case, you will also need to rig some stuff up to get the backup lights and neutral safety switch (NSS) to work. i have my NSS jumpered at the connector in the engine bay near the firewall on the passenger side. and i haven't done anything for the back up lights. i don't think the car will start without the NSS thing.

lastly (at least for now), you may or may not have anything to do with your exhaust routing. my setup is so far from stock (351W, aftermarket k-member, mid-length headers, ...) that the fact the my mid-length headers needed tweaking to clear the k-member and transmission may have nothing to do with the transmission and everything to do with all the other custom stuff in my setup. i just thought i should mention that there might be a clearance issue with the exhaust.
 

BlackVert

15 Year Member
Oct 3, 2003
5,589
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Bethesda, MD
Jan 7, 2010
#8
  • Jan 7, 2010
  • #8
n.e.mich said:
...
Really not looking for an overdrive tranny
...
Click to expand...
lol now that i see this, it sounds like you are looking more for a C4 than an AOD

mine is an automatic with over-drive

i think some of what i said before still applies though ...

there are a few guys on there who have swapped to those too, maybe one of them will chime in
 

n.e.mich

New Member
Sep 23, 2009
8
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Tawas City, MI.
Jan 7, 2010
#9
  • Jan 7, 2010
  • #9
BlackVert said:
lol now that i see this, it sounds like you are looking more for a C4 than an AOD

mine is an automatic with over-drive

i think some of what i said before still applies though ...

there are a few guys on there who have swapped to those too, maybe one of them will chime in
Click to expand...

Wow, thanks for all the good info!
My car is far from stock also, I guess what I would like is as simple a conversion as possible, including buying a aftermarket shifter (like a ratchet or hammer shifter). Not too worried about a kick down really, but obviosly the reverse lights, NSS (etc) will need to be dealt with.

The farthest this car is driven is about 2-2.5 hours away, mostly just around home though. 20 miles to work once every couple of weeks and half a dozen trips to the track in the summer.
 

BlackVert

15 Year Member
Oct 3, 2003
5,589
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98
Bethesda, MD
Jan 7, 2010
#10
  • Jan 7, 2010
  • #10
you're welcome!
n.e.mich said:
...
Not too worried about a kick down really
...
Click to expand...
i'm not sure what you mean here, but if you are saying you don't think you need one, you should re-think that because without it the tranny won't have enough line pressure which can ruin a tranny pretty quickly.

of course, if a C4 doesn't use a kickdown, then forget it
 

n.e.mich

New Member
Sep 23, 2009
8
0
2
Tawas City, MI.
Jan 7, 2010
#11
  • Jan 7, 2010
  • #11
BlackVert said:
you're welcome!

i'm not sure what you mean here, but if you are saying you don't think you need one, you should re-think that because without it the tranny won't have enough line pressure which can ruin a tranny pretty quickly.

of course, if a C4 doesn't use a kickdown, then forget it
Click to expand...

Oh OK, I didn't even think of that. Well, I used a sick day from work today and finally got the air bag installed in the right rear spring and gave it a coat of wax.

 

revhead347

Apparently my ex-husband made that mistake.
20+ Year Stangneter
Jun 14, 2004
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Acworth, GA
Jan 7, 2010
#12
  • Jan 7, 2010
  • #12
Finding parts for an auto swap shouldn't be too hard. The best way is to find someone who wants to swap their auto to manual, which there are plenty of people who want to do that. Then offer to swap all your parts for theirs.

Kurt
 

n.e.mich

New Member
Sep 23, 2009
8
0
2
Tawas City, MI.
Jan 7, 2010
#13
  • Jan 7, 2010
  • #13
revhead347 said:
Finding parts for an auto swap shouldn't be too hard. The best way is to find someone who wants to swap their auto to manual, which there are plenty of people who want to do that. Then offer to swap all your parts for theirs.

Kurt
Click to expand...

I was kind of wondering if that was possible......would be really nice if they were local!
 

revhead347

Apparently my ex-husband made that mistake.
20+ Year Stangneter
Jun 14, 2004
9,296
1,640
214
Acworth, GA
Jan 7, 2010
#14
  • Jan 7, 2010
  • #14
Hunt around online. Someone will turn up wanting to do that swap eventually.

Kurt
 
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