Steve,
unless my math skills have degraded terribly, 235 - 183.3 = 51.2 or a 22% loss
( Jack's example of a 250 HP R/T putting 190 RWHP is a 24 % loss)
263.3 measured RWHP *1.22 = 321 estimated flywheel HP.
You seem to imply that Kenne-Bell's dyno graph of my truck is inaccurate, and I wonder why
Anybody have any Dyno's of a stock 00 CC ,4.7, 3.93 rear for comparison?
I do, however, agrree that driveline losses thru the R/T trans and driveline will be different from ours.
http://www.t-e.com/kb/jeff-dakota.htm
Steve wrote:
>>Incorrect statement since the tranny and drive shaft are not the same from
>>the 5.9 to the 4.7 model. The lost for a 4.7 five speed is around 11.54
>>percent and the auto version is only 19.2 percent drive lost. My truck will
>>be dynode by JBA for the before and after installation of the prototype
>>headers.
>>I had to laugh when I seen Kenne Bell Dyno specs and seen others that
>>already had there 4.7 done on a Dynojet machine. Big differences!
Jack Hilton wrote:
>>A stock Dakota R/T will put right around 190 HP to the ground, depending on
>>if it is a RC or a CC (more distance in a CC for the HP to travel down the
>>driveshaft)
>>based on the few dyno sheets I have seen, and shows that have dynoed stock
>>R/Ts.That means that if you take the stock manufacturer's rating of 250HP,
>>that you are looking at about a 26% loss of HP in the tranny, driveline,
>>and associated friction.
>>If you apply that same percentage to this SC 4.7 (yes it is) then you get a
>>flywheel SAE Net HP rating of about 346 HP.
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