Your info on the M6\M5's is way off, same for the C6 Z06... The M6 stock runs the 1\4 in 12.4 @ 115-117 mph and the C6 Z06 with a expert driver can do it in 11.8 @ 122-123 stock....

Typical drivetrain loss for a N\A car is 16-18% and for assisted cars like ours and other supercharged or turbo cars is 12.5-13%

A stock M5\M6 is around 428-430 whp= 500 crank.... You'd need 340+ whp to run an M6.....weight to power ratio might be lower for your car but that does not mean your car will be faster......

The turbo on our cars looses power when boost passes 27 lbs\psi... It's pointless to run your factory turbo like that, it'll not last more than a few thousand miles at this rate....


Pulled would mean the SRT8 was behind the cobalt and catching up!!! DUH!!... SRT8 in front from the start, Walking is more like it.....

The prochargers for these cars (SRT8's take them from 420 hp to 540 or so crank hp) , so he did keep up rather well considering this thing is 4100+ lbs and makes more hp at the crank than the 500hp M5\M6's in the world with the same weight.....Not bad......

 

Drivetrain losses have nothing to do with na or turbo / supercharged, they are frictional losses between gears + rolling resistances of bearing and seals....

 

you got owned