You dont upgrade the fueling system to spin a motor higher.. there's far greater advantages to it. And generally diesels can be spun much higher than stock, you just have to upgrade fueling.

 

ok. then more power? but diesels have more torque at lower RPM's,

 

Depends on what engine.


Spinning more rpm would increase the hp and get you down the track faster but the torque is what gets you off the line.

 

See below

Yes.



Rpm=power, I dont care how you look at it. Thats why hondas can produce such hi hp numbers at 7, 8, 9k rpms+... because you wind them out and they have no choice but to produce power. (We wont get into a torque discussion with them hehe)

A diesel, such as a v8 powerstroke, is designed (and capable...) of revving much higher, and therefore producing greater hp/tq numbers at higher rpms. Inline motors, like the cummins, typically dont like revving too much. They produce more power down low naturally, but again, increasing rpm's in them increases hp/torque.

 

i agree to a point. my pickup has the best power under 2700 RPM. after that it's a dog.

 

Here's a 6.4 at 5200. But they're not HEUI.

http://www.youtube.com/watch?v=B4JXbhSvF-U&feature=youtube_gdata_player

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Right.. with stock heui system, hpop, and fuel right? Upgrade the heui, hpop, and fuel and more rpms/power can be achieved.

Good video

 

Yeah that American Ride pulling truck is insane haha. BTW I think they make a p pump conversion for the 7.3!

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ya they probably do.. although it would be a HUGE pita.. probably FAR more than it's even worth