tci 904 or built 727

That was an excellent explanation of how these transmissions work!

The clutch drum blowing up from excessive rpm is just the last thing that happens, and is a symptom of the REAL problem, which is the sprag anchor coming loose in the back of the case, AS I UNDERSTAND IT.

Is that true?

The method by which that sprag anchor is secured to the case apparently different in the 727's and the 904's.

Having never even SEEN one, I am way ignorant and just trying to get information here. My friend, the tranny guy, says the 727s have a lot more trouble with that happening than do the 904s, and that's why they are the ones that blow up. He's been rebuilding Torqueflites for drag racing applications for 30 years, and has always attended LOTS of drag races (was Div. VII S/S Points Champ for 3 years), and says he's never seen a 904 blow up.

I have never seen ANY Torqueflite blow up, but I need to get out more...LOL!

Thanks again for that interesting and educational post, moper; that was some really good information!!!

Bill, in Conway, Arkansas