Was sooo close....

transman said

Short of cutting it open, there is NO WAY you can properly clean a converter out. Foreign material will compact in the vanes of the pump and the turbine and no amount of flushing with solvent will get that stuff to move. Also, the transmission oil cooler in the rad, or any external cooler will have the same junk, and need to be attended to.

Click to expand...

They do have flushing machines, and I have personally used them before with very little confidence that they actually worked worth a damn.
If you have ever blown out cooler lines you know how hard it is to get all the junk out of them, so exactly how is a low speed rinse going to get all that junk out of a converter with all the nooks and crannies they have.
Then you have Torrington style needle bearings and other critical surfaces as well as to consider.
How much damage was done to those surfaces, and would you want to risk a new rebuilt trans on them?

IMO a converter flush on a trans that blew up is only good for making a shop more money, and puts the new or rebuilt trans at risk of early failure.