[srvivor71]

Apparently GM has recycled the LS9 nomenclature because this is what I get when I search the web for LS9 info:
The 2009 ZR1's LS9 engine develops 630 horsepower but actually has less displacement than the Z06's 505 hp LS7 engine (376 vs 427 cubic inches).
Wouldn't mind having one of them...