Quote:
Originally Posted by DGthe3
If a 460 hp C7 GS is within 0.5 seconds of the C6 ZR1 around that track (Milford?), consider what it would do with ~15% more power.
Of course, the issue (as always) is cost. To do a Grand Sport otherwise the same as they did plus a brand new 'LT6' type engine (akin to the C6 Z06's LS6) would cost thousands more. To hit the same price point they're aiming for with an 'LT6' included, it means sacrificing other go fast equipment -possibly to where its basically just a more powerful Stingray.
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15% more...20% more....30% more...50%........it's that sort of thought process that has brought us the LT4 engine in the first place. I think people want something special in terms of engines and horsepower "just because"...not because it's truly necessary. For the record - I know you're right. The Z06 proves
that. 
But, I have to imagine an "LT6" sort of engine like people are describing would be best suited for the Z06 in the first place. But...clearly it's not there. We've been told the reason is they cannot pull 500hp out of a naturally-aspirated OHV engine and still meet emissions regulations...apparently, even with direct injection. So why now, does anyone think it would be developed for and used in a Grand Sport? What is, effectively, nothing more than a clever hand-me-down option package?