Originally Posted by malcb
I have to disagree with that - take a current F1 V8, at 2,200 rpm it would probably stall in a Crossfire.
It's more about displacement - a larger capacity V8 will have more torque at lower revs and perhaps not rev as high, the 2.4L Honda V8 revs to 19,000 rpm.
I if we assume all the indicudual cylinder displacements etc are the same, ie the V8 has 33% more displacement that the V6 the statement is OK.
PS - 2,200 sounds about right - puts the revs at 2,570 for 70 mph and around 5,700 for 155 mph? Might even be a little on the low side, have to check next time i go out - probably at 60 or 70, not 155.
trying to compare apples with apples, a higher cylinder pressure is what makes the torque higher, if you have more cylinders as in a v8 v.s. v6 then you have more TQ in the v8 assuming both have similar cylinder pressures. the v8 has the extra leverage on the crank also.
that 2.4L v8 doesn't make enough cyl. pressure at 2,500 rpm to move anything, but a 900 lbs race chassis.