Originally Posted by
bunny
Do you know what is "torque"?
The IS-F doesn't need as much torque as the LS460, since it's way lighter. Torque is only good for low-rev start up. As long as it's adequate, there is no advantage to overshoot it. From that point on, it's the horsepower that really counts.
I think most of us here understand the difference between torque and hp, I'm just simply stating that it is weird that the 5.0 engine in the pefrormance tuned IS-F has less torque than 4.6 engine in a luxury tuned LS. Of course, they might have decreased the torque to increase HP, but that doesn't seem to be the case, as the HP only went up by 20, from 380 to 400, and with increased displacement and all that tuning, I don't think they had to decrease torque to gain only 20hp.
In comparison, GS400 debuted with 300 lb/ft, and lated receive a .3 liter bump to become GS430 with 325 lb/ft. If anything, the IS-F should have 390 lb/ft, up 30 from LS460.