Flywheel Horsepower - Ford Powerstroke Diesel Forum
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post #1 of 3 Old 11-10-2011, 03:53 AM Thread Starter
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Flywheel Horsepower

Does anyone know what the flywheel hp is on a H&S hd300 tuned 6.4 with a decent cia and exhaust? I know it's what is at the rear wheels that counts but flywheel always sounds better.
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post #2 of 3 Old 11-10-2011, 03:56 AM
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I'd guess another 50 hp or so then rw

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post #3 of 3 Old 11-14-2011, 06:21 PM Fanatic
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It can always vary a little of course
From what I have seen most people plan on a stock engine to make about 275 at the wheels on the low end with the hp increase with a tune being numbers reflected at the wheels also (but nine times in ten those are pretty optimistic) so a 275 tune yielding 550 whp so a 300 making a semi realistic guess of 575 at the wheels
add back in the originally lost 75 say about 650 at the crank

In the end I think that is a pretty generous guess, I would off hand assume its a little less, but not sure about that

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