Does anyone know why the camaro ls3 is only short 8 on hp, but is short 16 on lb/ft of torque (double the hp loss). Did they ever explain why that is?
corvette= 430hp and 424lb/ft
camaro= 422hp and 408lb/ft
shouldn't camaro = 422hp and about 416lb/ft
To answer Rizay's original question I would have to say Devryn is correct. When a manufacturer utilizes a particular engine in multiple platforms (Corvette and Camaro in this case) there will be differences in the intake and exhaust systems that will effect the HP/TQ figures.
Like others have said, the figures differ simply because of it being different cars.
Chassis dynamics and geometry, exhaust routing, cooling system, and drivetrain packaging are all contributing factors.
This is the same thing that happened back in 1998 when Chevy said that the LS1 in the Camaro was producing 305hp and the corvette was prouducing 340hp... It was funny that most Camaro were putting down upwards of 290-300rwhp stock or slightly modified. That is around the 340hp mark if you take away drivetrain loss. Who wants to pay $45000 for 340hp when you can get that in a $25000 package (back in 1998)... I'm thinking that they have done the same thing here.