Where? I would imagine that I've spent far more time on the Ford diesel boards than you, and cannot readily come up with any instances of a Powerstroke succumbing to cavitation. Are people concerned about it? Yes, but it's not as an immediate of a threat as it is with the 7.3l IDI, and in fact the arguement has been made that cavitation can happen with any diesel engine. The 7.3l IDI, on the other hand, had serious issues because the problem was unknown when the engine began production in 1987, and so the IH engineers felt that there wasn't an issue with boring the 6.9l engine block out to 7.3 litres. They realized that this was a problem in the early 1990's, and later Ford IDI's were sold with instructions to keep the coolant additive package up-to-date. Also, IH was able to redesign the block to minimize the issue when they designed the Powerstroke.

Take a look at these links:

Page describing cavitation in general

Some good pictures of a cavitated 7.3l IDI

Cavitation thread on the 7.3l IDI board on TheDieselStop.com

Another cavitation thread on the 7.3l IDI board

Thread regarding whether cavitation is serious or not, on the '94-'97 Powerstroke forum

Another thread questioning the concern about cavitation, on the '94-'97 PSD board

Another thread on the '94-'97 PSD board, specifically saying that there hasn't been a recent occurence in a PSD

BTW, the only problem with finding those threads was all the stuff I had to sift through...it's well-documented on this site. TheDieselStop.com is considered to be an authoritative source on Ford diesel trucks, as much as the TurboDieselRegister is for Dodge trucks and TheDieselPage.com is for GM vehicles.

NOT true...I'll be the first to admit that Ford has issues of their own. Electrical connectors were not thought out well, the Twin Torsion Beam suspension leaves a lot to be desired (but I'd still take it over GM's CV-joint IFS garbage any day!), the 6.0l has been having more than its share of problems, and every of Ford's diesels have had their share of teething problems (CPS's on the 7.3l PSD's, cavitation on the 7.3l IDI's, injector pump issues on 6.9l's and 7.3l IDI's {which I believe 6.2l's share, since they use the same pump}, head gaskets on early 6.9l's, etc).

Also, before you try to call me a rabid die-hard Ford guy, let me say right now that, were I to buy a new truck, there's no question in my mind...that I'd buy a Dodge. The 7.3l PSD is a decent engine (the 6.0l isn't, though), but IMHO the Cummins 6BT is far superior. You believe that the Dodge truck is junk; I have yet to see any conclusive evidence stating this while pertaining to '94 and newer trucks (yes, the '89-'93 left a ot to be desired).

I'm not particularly brand-loyal...except that I will never willingly buy GM or anything built in Japan (and before someone calls me on that Toyota pickup I'm getting, that's being given to me, and note that I'm putting a German diesel in it). And yes, I've had some direct experience, and many instances of immediately-secondhand experience (family members, etc) that led me to that decision.