http://forums.corvetteforum.com/showthread.php?t=21454343 base line runs - best being 549.9 rwhp
Pretty good numbers.
As the for the Vette being a slightly tired test mule - maybe. But, the Dodge Viper ACR - a car that is VERY similar in performance in the video Dodge released accelerated the same as the vette. So both of those cars were tired test mules? As for boost being turned down - i heard the same overheating information - that if you wanted more power out of it that you would need better cooling - but it had/has no issues with its rated SAE output.
Lets say your calculations are correct (and I am not sure if they are). The video still doesn't show it. It shows the less powerful GTR staying right with the ZR1 in acceleration above 140mph. It shows it staying right with the Dodge Viper ACR as well above 140mph. As far as earlier on throttle, if you look at the times thru the corner leading upto the first bridge the ZR1 is actually faster over that time by a wide margin - 4 seconds. But the Vette gains NO ground after that on a 23 second straightaway.
Better gearing for the GTR - do you happen to know the gearing of the ZR1?
Less HP differential to the wheels? ringer GTR?
It doesn't appear to hand with the ZR1 and ACR it DOES hang with them.
The reason it matters is because any manufacturer can use such times as a marketing tool - which nissan has done - and cheat and get a better result than what could be obtained by a production car. What is to stop Mitusbishi lets say from making a 1000 hp lancer and running a 6 second time and saying it was stock? Nothing.
Demosthenes X - acceleration above 140 mph really does have ALOT to do with HP! ALOT - not all - but alot. I don't think there has been a test where the GTR is faster accelerating above 120 mph than a Z06..... let alone the much faster ZR1. But it did - maybe there was a faster car pushing it down the straightaway?
As for the tuning company 'probably' advertising rwhp. Why would they do that? No one else does it.
Mitlov:
Regarding the gearing:
There isn't much more to say. No where on this planet is there information that contradicts what I have posted. I would have to think you've tried and failed to make any findings to the contrary. And if in fact it WERE to be true, then Nissan really did have a ringer instead of the 'stock' car they claim to have run.
Everything you say regarding differences in accel from pre to production is very accurate. The only LAST step is to say that the GTR that ran in the video is pretty far from stock - which makes it a XXXXXX <- what word goes here?
Regarding the video:
You see something. I see something. Impasse agreed on the inside strip to bridge. But the easy thru the windsheild marker that is visible at 6:27 in the vette video and 6:30 in the GTR video and do the timing from there...... Vette is faster to the bridge.....
Hold on a second - this deserves another new post!