First, your subject line. The answer is no, not if properly executed.
I took my dad's old dump truck out into the field and managed to get >the
>rear wheels spinning at 70 mph-- while standing still.
You have no respect for motor vehicles, do you? Field driving needlessly in someone else's vehicle. Then abusing it further by revving the heck out of it with minimal load on the engine.
Trouble is, the rear tires got traction and the whole truck got
>airborne---
>leaping and jumping across the meadow. It really was a handful, trying >
>to regain control.
Perhaps you have some idea of how your father feels about you now. Unfortunately, it's much easier to bring a dump truck under control than it is to bring an irresponsible child under control. The trouble wasn't that the rear tires got traction, it was that you were in the process of severely abusing the vehicle when they did.
Ever since this happened I get this horrible rod-knock from the
>engine.
That probably started prior to the tires getting traction, from being revved too high with too little load. It's a catch 22. If you hadn't been abusing the truck, you could have heard it. However, if you hadn't been abusing it. it probably wouldn't have happened.
I can't decide if I bent a connecting rod or spun a bearing.
I can't decide if you're just ignorant, or malicious. I have decided however, that you're more than likely a thief. Nothing about this story indicates to me in any way that your father would have authorized such an adventure. You took the truck without his knowledge, didn't you?
Dad comes back home next week. Help!
My suggestion is to start apartment hunting now.