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Engines lose 15-20% of their BHP when you measure RWHP with an automatic, it is closer to 10% with a manual tranny. All manufacturers advertise BHP because it is the highest number and is the standard. It is funny I see this happen in almost every HP thread on the net, someone mentions BHP then someone has to mention RWHP then everyone gets confused. They are BOTH right 325BHP or 280RWHP it is the SAME thing. But we all know HP is not the important thing for pulling it is the 550+lb-ft of torque.
I frankly don't care what the RWHP is, mainly because it gets people too confused. Not to mention the people that dyno their vehicle and wonder why the numbers aren't what the factory lists them at
Technically speaking, Chevy and Dodge both put out more RWHP than our Fords stock according to an article in Diesel Power magazine a couple of months ago. But until the introduction of the LBZ Duramax, the Powerstroke would still out-perform the other two in all aspects of towing while making less power.
so you mean all trucks have the power lose ford being the leaat becuase we all know fords tow more than chev or dodge
Not sure what to tell you other than that we dyno these trucks on a very regular basis, and almost all of them will register 280-290 horsepower stock depending on driveline configuration. The stock 325 horsepower rating is at the crankshaft (base horsepower) and is quite accurate; the rest is lost through the driveline just like any other vehicle.