Ford AOD Question

[BLK306]

Does anyone know if there are any differences in the internal components between a small bell AOD and a large bell AOD? I'm trying to figure out if I can take the guts out of my large bell AOD and put them in a small bell case without any issues.

[greenbullitt]

small bell aod? thats news to me...

[Doug Hatton]

I was thinking they were all the same, but didn't wanna say anything... maybe an early auto?

[Woods Racing Transmission]

Maybe the "large bell" is an AODE/4R70 which has a larger bell because the converter is a little bigger. But, there are no "Big Block" cases and "Small Block" case like a C6.

[greenbullitt]

Maybe the "large bell" is an AODE/4R70 which has a larger bell because the converter is a little bigger. But, there are no "Big Block" cases and "Small Block" case like a C6.

and they both use a 164t flexplate

[BLK306]

Well the dude at BG turbo kits told me that they build their kits around a 157 tooth AOD and that the reason mine is hitting my down pipe is because I must have a large bell out of truck. I don't know enough about AOD's to know the difference.

[greenbullitt]

Well the dude at BG turbo kits told me that they build their kits around a 157 tooth AOD and that the reason mine is hitting my down pipe is because I must have a large bell out of truck. I don't know enough about AOD's to know the difference.

wtf...dougs car has an aod with bg...dont know why his would work Travis

[BLK306]

I don't know what the deal is. I did do some research and found that I do in fact have an AOD and not an AODE. I guess I can try and stab the tranny but the shim plate that goes between the tranny and block does not fit without hitting the downpipe. I even did some grinding on it so that it did not hang past the tranny. So my rational has been if the plate does not fit then there can be no way for the tranny to fit. I'll wrestle it up there and see what happens.

[BLK306]

Here are some pictures of what I'm dealing with.

[greenbullitt]

clearance the pipe in that area, its not that bad...also, to save you bigger problems, remove that pilot bearing, it cant stay with a convertor...

[BLK306]

Thanks for reminding me about the pilot bearing I had forgot all about it. As for the pipe I still have my doubts. I'd rather not beat it with a hammer but I figure I would at least set the tranny up there and see how much of it is going to hit. If it turns out to be minimal I may do it. I just don't want it to be all ghetto and beat up looking because I took the BFH to it.

[Doug Hatton]

Honestly, it's a very tight fit getting that 3-1/2" downpipe through there. It looks like you're past the hard part (getting it between the header and the firewall. I didn't wrap mine that far down which might help a little. I stopped my wrap where it turns down at the firewall. I use a lapjoint type exhaust clamp at the area you're showing in the pic which connects to the rest of my exhaust. I have a fullsized starter and an AOD and I usually position things so that it has minimal touching once installed but I still occasionally hear it vibrate up against the car somewhere. I had my tranny installed already when i dropped the downpipe down.

[RuStYpNuS]

you could try laying a pipe across it and hitting the pipe to clearance the down pipe. it would probably make a cleaner dent than a hammer alone.

[greenbullitt]

you could try laying a pipe across it and hitting the pipe to clearance the down pipe. it would probably make a cleaner dent than a hammer alone.

correct....plate steel, 2x4, etc...makes it uniform, not ghetto