ib516 wrote:
Turtle n Peeps wrote:
Hedgehog wrote:
Does anyone know why the 6.2 gas in the ford has less horsepower in the models over 10,000 gvw
Duty cycle. Same thing as medium duty trucks have the same engine in them as a class 3 truck but is detuned to less HP.
Not true. Its actually noise related. A Ford Powertrain engineer answered that question a while back on one of the Ford forums. The engines are identical under and over 10k gvwr, but over 10k they are rated at a lower RPM for noise reasons. Dumb yes but true.
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Which came first, the chicken or the egg.
Same with the Vetts of the early 70's playing games with the insurance companies. They would rate them at a much lower RPM then the engines were capable of. GM's official line was the engines made less power. We know that was not true but never the less that was their line.
Much like Fords official line saying it's because of EPA noise requirements but I guarantee they don't want to have HD F350's making the same power of lets say a raptor. And it's because of duty cycle........or EPA noise requirements. :W
