You forgot
http://wiki.answers.com/Q/How_much_t...ula_1_car_have
the 2006 2.4 litre Toyota RVX-06 V8 engine produces 552 kW (740 bhp, 751 PS) at **19,000 rpm**(LOL) and outputs
274 N·m (202 ft·lbf) of torque giving the engine a 14.3 bar (1.43 MPa) mean effective pressure.
( ok max torque must come between 14 to 15KRPM, doesn't matter since rarely this engines went below the 12K RPM, and cars are very light (low weight) and always very fast even on corners, so that stupid exercise with ridicule torque only could fit F1)
the 1.43MPa mean effective pressure is per cylinder... if you quite augment the MEP per cylinder with 3L (easy to do if optimized for it), and you have 2 more cylinders, quite possible you could have double the max torque at half the RPM (7 K RPM)
Torque doesn't have to do with the curse of the piston... or RPM... in a direct way... but with the capabilities and figures of the MEP (mean effective pressure). Or better put, if you augment the MEP, that is, you create more pressures inside the cylinders, your capability to RPM diminishes because this are "reciprocating" designs(meaning parasitic torques would be higher)... and your engine must be stronger to withstand it -> more heavy (turbo diesels have almost double of turbo petrols, and for normal aspirated engines is much more than double-> could be, i.e. depends on engine ).
Or put the other way, to rev high your MEP must not be high... compression stroke would be a ***** and balance would be ruined.( the piston could have a long curse, it doesn't matter much)
EDIT : Good reading ( torque is not *power* but it helps the heck! of it to get there - max power- fast)
http://www.bankspower.com/techarticl...so-much-torque (hope it sheds some light)