91 aod trans fail

91AODstang

New Member
May 5, 2012
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my transmission is slowly dying, i use my car for daily driving only i want to replace it soon but im not sure what would be best an aod trans from LateModelRestoration....or a c4?? i still want the car too have the best performance ................might be using it for street racing
 
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Well it's a daily driver so stick with the AOD since it has over-drive. You'll get better fuel economy. And, why not just have someone in your area rebuild your AOD? They're not a very complicated trans at all.

BTW the C4 isn't the same length as an AOD. So the crossmember would have to be modified and your drive shaft would have to be lengthened due to the fact that C4's are shorter than AOD's.
 
Well it's a daily driver so stick with the AOD since it has over-drive. You'll get better fuel economy. And, why not just have someone in your area rebuild your AOD? They're not a very complicated trans at all.

BTW the C4 isn't the same length as an AOD. So the crossmember would have to be modified and your drive shaft would have to be lengthened due to the fact that C4's are shorter than AOD's.

can i put a shift kit/stall if i just get the aod rebuilt at a shop or whatever?
 
Yes you can have them install a shift kit. But why get a higher stall torque converter? That's almost useless, especially for a DD. Higher stall torque converters are made for cars with bigger cams because the power is higher in the RPM range due to the longer duration and higher lift. Factory stall speeds are best for factory cams because the stall speed is relatively close to where your engine starts making power.
 
Yes you can have them install a shift kit. But why get a higher stall torque converter? That's almost useless, especially for a DD. Higher stall torque converters are made for cars with bigger cams because the power is higher in the RPM range due to the longer duration and higher lift. Factory stall speeds are best for factory cams because the stall speed is relatively close to where your engine starts making power.

so even if i have an e303 cam/f303 thiers no need for a stall con,?? i found a place that can rebuild for $900
 
Oh yeah if you had either one of those cams I would get a higher stall converter. Nothing outrageous like a 3000 stall or anything. That would suck for in town driving. Too many "daily driver" hot rods have I ridden in or driven that had way too big of a stall and they were terrible in town. Get a converter that the stall speed is relatively close or a couple hundred RPM's more than when your cam starts making power.

Don't buy a 3000 stall torque converter when your cam starts making power at 1500 RPM is pretty much what I'm telling you lol.
 
And $900 seems like a good price. But, is that them pulling it out, building it, new torque converter, and putting it back in? If it's $900 for just a bench build (you pull the trans yourself and take to them) then it better have some BA high performance parts and an awesome torque converter or they're screwing you.
 
hahaha im not sure my brother asked around for me ill have to get the details.... if thats the case then yea irather just pull it myself......oh and i have the e303 cam in it BTW do you know how much of an effect an A/C delete has on my car as far as performance or hp?
 
I've had a lot of problem with my performance automatic AOD so.beware even a 2300 dollar AOD can still have problems maybe.look in to lentech transmissions there soposed to.be the best out there PA is also soposed to be great but like l said I've had a lot of problems with mine it is life time.warranty so its being fixed but its a hassle good luck
 
yea iv heard bad things about the automatic transmissions in the 5.0 im not sure weather to get it rebuilt or just sell it and get me a 5speed............but thanks man ill check out lentech/PA
 
Where are you guys getting your quotes from? At my shop, we charge $950 for us pulling it out, rebuilding it (with shift kit), a new torque converter, and us putting it back in with a 12 month 12,000 mile warranty. I don't think that's bad at all. I'm sure a T5 swap is more than that. If not, someone enlighten me lol
 
I paid $900 for the transmission, bell housing, pedal assembly, aluminum driveshaft, crossmember and a short throw shifter. You just have to keep your eye on craigslist and ebay. I purchased new a firewall adjuster, new cable as well as tranny mount and a new clutch. I did all the work myself, the hardest part of the swap was the pedals, I found info on here on how to complete the swap. I never cared for the aod, so I was kinda happy when it blew up lol.
 
lol maybe ill just wait till my tranny :leghump:s up then haha im trying to sell the car as it stands but if it doesent sell ill just keep it till it messes up and slowly start the 5speed swap