Quote:
Originally Posted by bruce.augenstein@comcast.
See, the point I was making was that the LS3 is lighter than the M3 V8. It's also more compact (particularly in height), so you can get a lower center of gravity. Obviously, it also makes more power (by 22 hp), and more torque (by 124 pound feet!). If you put this engine in a new M3, you'd have a lighter car that would handle a little better (due to the lower center of gravity), plus the car would be quite a bit faster on a drag strip or road course - and be stupendously faster on the street in everyday driving.
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A DOHC design carries some extra weight up top and that is a small draw back of its deisgn. However, the redline of the M3 is quite stupendous. Your post above is a bit dismissive of the value of a high rpm engine. The Vette engine is not absolutely better in all regards, hands down.
Also as far as engine weights go: If we can barely agree on what cars weigh and they are regulated by laws, standards and conventions how can we expect folks to meausure and report engine weights in a fair and consistent fashion. For example I seriously doubt that the 6.3 l AMG motor weighs close to the same as the M3s engine. It is so much larger and unless made of unobtainium larger generally = heavier. And they are the same basic layout/design as well making it an "apples to apples".