Yeah, but what is that "theory"? I actually thought it was an industry standard.
Oh, and Dick Landy, back in the day, was quoted as saying the 904 weighed less AND took less horsepower to run.
Anything lighter takes less hp to run, it's why i always tell people... 5 and 10 pounds in the driveline is equivalent to a couple hundred carrying pounds, it's why i can't understand why people skimp on the driveline and toss everything at the motor to lose more hp then it can get to the tire.
Ever see a 800hp car get spanked by a 600hp car....and they wonder why...
I forgot the tests on the trans, but they didn't take into account tc's are all different and 2 spds are totally different then 3 spds.