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"Estimated" is the key, could go higher and could go lower-kinda like predicting the weather, without any committment to the actual number. Did not see a disclaimer about type of gas being used, hopefullly this is not on E85, LOL.
You never saw anywhere else, where they have said or mentioned an estimated 450/450. Not in any adds, promos, write ups etc etc?
Then yes, book your eye exam quickly.
Admittedly I haven't been keeping up with it as much as I should. So Chevy already released this information elsewhere? I've seen forum members post 450/450 but hadn't seen anything from Chevy.
Either way, as others mentioned it does say "estimated." It just seems strange to me that Chevy would put numbers out there if they weren't somewhat accurate, especially in an e-mail to current owners whom they're trying to sell the new model.
So even at 450/450 (which it won't be) it's already more powerful than the LS3. The C7 is leaps and bounds better than the car it's replacing.
I don't think anyone is arguing that 450 HP and 450 lbs-ft of torque is more the 436 HP and 424 lbs-ft of torque. It's the one's that read "estimated" and then brush it aside and then claim the real horsepower will be 496 when they don't have a clue as to what the SAE certified numbers will be, that are the joke.
The first engine GM had certified under the new SAE protocol was the LS7. GM estimated the horsepower of the LS7 would be 500, but when it was certified, it came in at 505 HP. Maybe GM, with those dozens of engine dyno's at their Powertrain division, know what they're doing and can operate a dyno and read the graphs, before they have the engine certified.