The m3 is 450 to the wheels, BMW lists rwhp not crank for their cars.

M3 does not put 450hp to the wheels...

I stand corrected. 425 To the Wheels

I am reading the 6th gen will be using the CTS version on the Alpha platform (Automobile) not the ATS version. So I would not expect the 6th gen to lose much weight. It may be very close to the weight of the 2015 Mustang and just slightly smaller than the 6th gen. While many of us would like a smaller lighter car, Chevy is playing it safe. The 5th gen was a big seller.

BMW does not use RWHP, they use the exact same numbers as every US car manufacturer which are SAE certified ratings. These numbers are all crank hp and torque ratings. The M3 and M4 both make (SAE): 425 hp @ 5,500 rpm; 406 ft lb of torque @ 1,850 rpm. The reason for this standard testing is because rwhp numbers can vary from hour to hour depending on atmospheric conditions, testing an engine on an engine dy o is very accurate compared to a dyno chassis which provides wild rwhp numbers. And this is not an opinion or speculation but engineering fact.

The edge the new M3 and M4 have over the LT1 is the twin turbos, they make peak torque at 1,850 rpm to redline, that is pretty incredible. That much power under the curve accounts for its potent acceleration numbers. It will be very hard if not impossible for a stock LT1 to match that type of acceleration in a Camaro.

Exactly! They don't rate their vehicles at the rear wheels, lol! I worked at the BMW factory making the damn things. Yeah if I have the option for 450hp from a NA V8 or a twin turbo V6 I'll take the twin turbo V6, like you said more power under the curve plus easier to modify for more power.