I used to operate Cat 966 and 980 FEL's and while no where near as powerful as these once that turbo comes on song they would still spin all four wheels while dozing.

That one with two different types of engines, one looks to be an alki blower motor, the others some kind of huge turbo diesels, is pretty wild. I wonder if he has them on different gear ratios or something since obviously they have different redlines. Imagine if that Quad Jet Tractor popped a wheelie .. it would be like a balloon hanging off a weight aiming for outer space.

only reason some of these got a full pull is due to momentum. they had everything moving so fast at the start that it just kept going and with that power in front not much would stop it.