On prop torque, I recall descriptions of the the F4F Wildcat having enough torque that if you ran up the engine all to full power on the ground, that the tire on the down side would be pressed flat.
I seem to recall that being in the book "Ace", the one about the Hellcat night fighter ace pilot. I believe that one also involves the story about going inverted for the first time to discover that the ground crew had left a wrench in the plane.
Even jets have torque effects. The F-16's engine has enough momentum that if it suddenly stops, it will kick the plane over about a quarter roll before the fly-by-wire compensates for it. The early GE engines when installed in the F-16 had a tendency to vent all of their oil overboard. It's not a feature, just a bug.
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