I have a Vigilante 2800 and I believe I can cause the TCC to lock up even at WOT under boost (if not with the factory PCM then certainly with the T-Com).

Can those little clutches hold 600 ft/lbs? Anyone tried it?

 

I tried ones in the end of second gear(and true third), it worked fine but i didnt gain any time or speed.....

 

Yeah, to be honest I'm only interested in doing it on the dyno to get a little more accurate read.

 

OK, thats no problem, I locked mine every run we did on the dyno. Locked it widh a switch after i reached third gear before WOT.....
Dont think it should have worked without the switch, stalls to high and hits to hard....