Had my 2012 5.0 Dyno'd today, best was 386.40/373.45, SAE, 5th gear (1:1), 93 octane Sunoco, 3.73's (Stock)
Automatics will always draw more power from an engine than a manual trans due to the increased number of gearsets including planetary gears, as well as the torque converter itself and sheer volume of fluid.Actually I am told the automatics loose less HP then the manuals these days.
You are told wrong. A fluid coupling (torque converter) will always always always absorb more power than a direct mechanical coupling (clutch). That having been said, most torque converters have lockup clutches that eliminate this loss, but they only engage at certain speeds.Actually I am told the automatics loose less HP then the manuals these days.