SlickHolden said:
I was told by a little birdy that Ford Oz would use a V6 engine 2morrow if they could only get decent power and torque from it.
Straight 6 or V6 makes absolutely no difference to power and/or torque. As far as efficiency goes, there's no noticeable difference. Ford hasn't used a V6 in a Falcon simply because there's hasn't been a suitable V6 block to work with, and it costs way too much to develop a new one from scratch. Besides, their whole chassis architecture is set up for a straight 6.
There are advantages and disadvantages to using a V configuration.
A V6 needs a short, wide engine bay and can be positioned further behind the front axle for better weight distribution.
A straight six needs a long narrow engine bay but is much easier to balance for smooth running.
Mercedes & BMW have the same argument - Mercedes things V6's have more advantages, BMW is sticking with the straight 6.