How far to rev this 273 commando build

I dont fully understand it, but for example you have a "normal" diesel genset. Any that I've seen rev nowhere near 5200 rpm, but there is hp and torque? So that would mean for this example the 5200 is theoretical?

Pretty sure it's factual, Steve. I don't understand all of it myself at all. I will say this......don't tell anybody the new generation Ford Powerstrokes won't rev to 5200. Mine sure did. LOL

Did you read that post I linked to that Del posted the text of? I did and I'm still lost. Although a little less lost. A little.