most powerful engine

[CapnBoost]

7.000 rpm?!

Yup

"These classes are utilizing engines that were designed for 466 cid and pushing them to 680 cid, and then they put 100-300 psi of boost on top of that, depending on the class."

"The top diesel classes will run between 6,000 and 7,000 rpm, which is much more than a stock diesel tractor that may be only as high as 2,200 rpm."

[johnnynumfiv]

Have you seen the fuel pressures on those diesels? Isn't it around 20,000psi?

[CapnBoost]

The newest common rail systems can go a little bit higher than that, yes.