-
-
Re: the new corvette supercharged engine
Thank you Clem, Dale -
Re: the new corvette supercharged engine
Clem,
The obvious question is: what are they holding back the 7.0 liter (427 cu-inch) version for? At one horsepower per liter, that engine, when it arrives, will potentially make at least 700 horsepower!
My parents owned a 1995 Mazda Millenia "S" model, with a blown 2.3 liter V6. Mazda marketed it as the "Miller Cycle" engine, which it was (see: http://en.wikipedia.org/wiki/Miller_cycleComment
-
Re: the new corvette supercharged engine
i heard they are using the 6.2 because the cylinder walls are thicker than the 7.0.Comment
-
Re: the new corvette supercharged engine
Clearly a smaller bore for greater cylinder wall thickness is a necessary durability feature, but I see no obvious reason why the 4" stroke from the LS7 could not be used. With titanium rods and inlet valves and a 6500 redline the bottom end and valve gear are less stressed than LS7.
DukeComment
-
Re: the new corvette supercharged engine
how are they going to get the owners to trade up in a couple of years if they put all the goodies in this years package ? also the 4" stroke crank does not have the journal overlap of the short stroke one so it could be weakerComment
-
Re: the new corvette supercharged engine
Good point - the more torque an engine makes the more journal overlap is needed to keep the crankshaft out of torsional problems.
Since the ZR1 is likely to be in production through the end of the C6 model run, which is several years off, a "product improvement" in the form of a longer stroke could be a possiblity to keep sales going.
All other things equal, a longer stroke will not increase peak power. It will raise the torque curve and shift it down the rev scale.
Of course, adding more head flow and cam along with a longer stroke will increase peak power.
DukeComment
Comment