I found a 88 4 cyl mustang that runs good but just crushed in the rear (way beyond repair) and it had a o/d automatic in it. my question is, is the 4 cyl aod different then the 302 or 351 aod's? i wan to put it behind my 351 cleveland and i think it can get the car pretty cheap. thanks for the help

 

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Based on my recall, there are different size converters depending upon engine size. The smaller engines getting a smaler/thinner lock-up band. Recvommend you talk to Auto trans parts wholsaler, who should know best for your needs. DAs O usually have something torn down, am on good terms with ATF person. He recommended the 302 pickup converter (with a 2 inch lock-up band. As always, no warranty is implied or expressed. Throttle pressure is real critical on AOD, REad up on them.

 

Block to AT bolt pattern "should" be same. Anyone know if 351 Cleveland pattern diff than small block?

 

At first glance it does not seem viable to me. Not because the parts wont bolt up, I don't know whether they will or will not. I have always been gun shy when it comes to the early overdrive autos from detroit, it seems like it took detroit a few years to get things right on these. Also, it seems doubtfull to me that a trans made for a 4 cyl, would have been built durable enough to last behind your Cleveland.

Of course I am largely ignorant of the AOD, it may be fully upgradable, and it may be possible torebuild the trans to work well behind your 351.

 

I don't know, but my gut says absolutely not. And, I don't know where you would find the answer other than discussing it with an older Ford mechanic.