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Mustang Technical Discussion > Pre 1973 > C4 v AOD trans > Community Forums > Mustang Forum Australia - Mustang Tech

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C4 v AOD trans Reply to topic

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cage
Mustang King

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I am about to spend $1400 - $1700 on reconditioning my C4 transmission. My question is why do this if I am keen on more then a 3 speed auto. I am after any advice that you can give me on auto transmission options such as the AOD for instance. I know nothing about transmission so any advice would be appreciated.

Cheers


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xpconnor
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Here is a good link I found
www.mustangandfords.co...index.html


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cage
Mustang King

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Thanks XP. Check this out.
www.gearvendors.com/hrford3s.html


"The simple answer is, even if I have decided I still don't know what to do."

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hybrid
Mustang King

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Gear vendors would be the go if you can afford them.

The AOD are supposedly not as strong as a trick C4, but obviously it depends what you're planning to use it for.


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cage
Mustang King

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Street use Hybrid. I have heard these days you can build an AOD up for large horsepower. I wouldn't be going for anymore than 400 - 450hp for this car eventually so an AOD would be fine for that.

My thinking is why spend $1500 now when you may be looking at $3000 (only guessing) to get an AOD or gear vendors. May be worth waiting a few months to find the cash and then she is right to go.

I want to go down one of these tracks so I just can't see spending the money on a C4 now.


"The simple answer is, even if I have decided I still don't know what to do."

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hybrid
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Yep, that is a fair point.
Though if you were swinging towards gear vendors, then it still wouldn't hurt to have a tough C4 to bolt it up to!

I'm probably going AOD if I can...mine will only be street use too.


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xpconnor
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Just found this one for sale. Not sure if it would fit????
motownmuscle.com/forum...ansmission

Once I get my car I will be looking to do the AOD mod. Heaps better for cruisin.


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derwin66
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Gear vendors is the only way to go. AOD's have issues if the TV cable is not set right. The C4 is plenty strong for 400hp though the only reason you would need a AOD if you were going 3.55-4.2 in the diff gears.


65 T Code coupe\r\nBlown 302\r\nHeidts four link\r\nRRS Rack and Pinion\r\nC4 Gear vendors overdrive
1960 F100

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cage
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I have a great mechanic that will be able to sort the TV cable out but how hard is it to maintain the TV cable set up? In other words once it is sorted does it need constant maintainence to make sure the correct set up holds.


"The simple answer is, even if I have decided I still don't know what to do."

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soc123_au
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Once the TV cable is set its set. Its just a kickdown cable.


Album Link Below.

s608.photobucket.com/p...s_Prestige

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cage
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Took you long enough Steve, must be fixing all that rust in my car.


"The simple answer is, even if I have decided I still don't know what to do."

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gary70au
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Cage,

Just going to throw a bit of AOD info at you.

I have just rebuilt mine to suit the 400 to 450 hp my new motor will make.

I purchased the rebuild kit and the parts required, to upgrade it to handle the extra output from the US. The parts cost me approximately $1500 AUD plus shipping, if i remember correctly. I am not sure what a shop would charge to do the work as i have done mine myself.

I purchased a new valve body instead of fitting a shift kit. The valve body came with a few extra features that i liked.

Firstly it is set up so that the tv cable just needs to be attached with no slack. It is used only for kickdown as the valvebody keeps the line pressure up in the safe zone. (If this pressure is too low, as can happen with a poorly adjusted TV cable the direct clutch which is used in 3 and OD will slip and burn)

Secondly the VB is fitted with a solenoid to disable OD until i need it. (Not a good idea to hit OD at wide open throttle even with upgraded OD band)

If you go with an AOD, try to get a 1990 or newer one. At the very least make sure you don't get one any earlier than 88. Earlier ones will require most parts to be upgraded.

A good converter for the AOD will set you back around $950 to $1000 AUD.

An AODE is probably a better option as most of the upgrade parts for the AOD come from the AODE. However, the AODE is an electronic box so will need a controller of some sort.

An AOD can be built to handle the same power as the AODE but it would be at the cost of the lock-up feature of the converter as a one piece input shaft is required.

The AOD has a small input shaft for 3rd and OD, it is the weak spot of the trans (hardened upgrade available but still not as strong as the 1 piece). It is splined directly to the front plate in the converter so receives a great deal of shock on the 2nd to 3rd shift. The AODE activates the lock-up using a converter clutch which is activated electronically. This eliminates the weak spot.

There is a lot of info around for the AOD i just thought i would give you a bit of a heads up on the costs.

Check out this site, very good info on getting AODs to survive.

Click Click Racing

Let me know if you have any more questions, i may be able to help.


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cage
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Thanks Gary. I just got outbid on one on EBAY. Absolutely spewing. I talked to the guy yesterday and it sounded like a good one. Came out of a 67 mustang and was a 1990 one. Came with the flywheel, sandwich plate, coverter etc. Not happy. I've got to get the knack of this ebay stuff.


"The simple answer is, even if I have decided I still don't know what to do."

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hybrid
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Sheesh cage, you should have said something!
That was ME, sorry mate Sad

I'm happy to divulge my ebay "secrets" with you if you like.. pm me.


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cage
Mustang King

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You #@$#$# !@#$% (^&&*# !@#$5 b@st@rd Hybrid.

Whats with the "I'm probably going AOD if I can...mine will only be street use too." earlier in the thread you sheepish so and so. LOL

Oh well good on you mate, sounded like a good one. What max bid did you put in?


"The simple answer is, even if I have decided I still don't know what to do."

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