Many of the marine diesels have pistons bigger around than that whole pallet.
Two friends were talking about air compressors at a car show. One guy was an engineer for Ingersoll Rand, the other guy, I knew worked on aircraft.
I had just gotten a new, large, two stage commercial 5 hp for my shop. Had to use my engine hoist just to move it, so they let me join in the compressor discussion.
The aircraft guy said he just got a great deal on a two cylinder, government surplus air compressor. $50,000 and it only had one crack that his company was able to fix. In shock at hearing the price, I asked him how big the compressor was (thinking in CFM). He said it's two stories high. I jokingly asked him how big are the tires he's putting air in. Turns out his company was in the business of rebuilding 747's and they used it to pressure test the cabins for air leaks.
My 5 hp has seemed rather puny every time I look at it after that.