Re: Union Pacific Big Boy on the Move

[Pat White]

That's one big locomotive!  And heavy, too, at 1.2 million lbs.  The 
heaviest Diesel locomotive I'm familiar with is the GM SD-40, which weighs 
389,000 lbs when equipped with a V-16 General Motors 645E3 engine (645 cubic 
inches per cylinder, for a total of 10,320 cubic inches, or around 169 
liters, producing 3000hp at 990rpm).  It was also available with a V-20 
engine, but there may be larger, heavier Diesels available now.

All the same, it looks like they'd be dwarfed by the Big Boy.
Pat White