Dyno Sheet - HP and Torque Question

[Jimbocobra]

Here is a dyno Komet Motorsports in St. Charles, I just completed the dyno run last week. Frank was able to get the HP up dramatically, but I just noticed the torque was a bit lower than expected. The engine is supposed to be making 430hp and 450tq.
If I lose 20% to drivetrain inefficiencies, the hp the engine is making is really about 465hp (up from the factory rating of 430hp and consistent with what many magazine articles have said about the Ford Motorsports crate 392. See article Cornucpoia of Carburationhttp://www.airflowresearch.com/artic...024/A24-P1.htm).

Torque is about 355 at the rear wheels, which is also a 20% loss from the manufacturers number of 450 (450-20%=360). I ran it through factory sidepipes, but I still though it might be more. The magazine article does show the factory torque number is accurate at 450 vs. 455 in the article. Then the torque number on my dyno sheet seems close if 20% loss in torque is typical, so the question:

Is torque supposed to lose 20% due to drivetrain inefficiencies as well?