GM’s New 6.2 Liter V8 L86 vs. 3.6 Liter Twin Turbo V6 LF3: By The Numbers

[DGthe3]

Originally Posted by evilstevie

I'd be a lot more interested in seeing the physical dimensions and weight of both motors.

I read in Popular Mechanics that the new twin turbo V6 weighs 37 lbs less than the BMW 4.4L twin turbo V8. Unfortunately, that isn't terribly useful if we don't know how much the BMW engine weighs.

No word on the next gen small blocks, though I have heard that the LT1 will be a little heavier than the LS3

[Bhobbs]

Originally Posted by evilstevie

I'd be a lot more interested in seeing the physical dimensions and weight of both motors.

This.

Size and weight seem more important than power density.

[DGthe3]

I seemed to miss the question about size yesterday.

I'd say that overall height wise the two will be fairly similar, the V6 might even be a tad taller. The V8 will obviously be longer (1 more cylinder per bank with bigger bore spacing) and probably a touch wider (the heads on an OHV don't stick out as far as OHC heads do, but the V8 would also have a taller deck sticking out at 45 degrees from vertical rather than just 30 off.