ORIGINAL: scottywilkes
thats what im saying,
The mach turns higher RPM but is a smaller displacement motor
The 8.0 is a larger displacement motor but with less RPM
The 8.0 is twice displacement of the mach, yet the mach revs twice as hard as the 8.0, they basically even them selves out there.
Anyway, 12 minutes is bloody good, given the INSANE ammount of torque it has, and it has awesome top end to, even if not more than the old 4.6
The calculation it's not like 1+1=2 dude.
In another thread (don't remember which one) a professional mechanical engineer explained that even running a lot less RPMs, the 8.0 will drink considerable more fuel because of the larger displacement than a .28 or something like that.
I hope someone with the right knowledge will chime in and explain that again.