While the 2001 and 2002 models did get the LS6 intake they also got a milder cam. That's why they generally don't dyno that much higher than any other year.

It is unusual to see an M6 dyno under 300 rwhp.

 

People call it a "milder" cam but is it really?

I dyno more. .people will say its cause of the intake. .Fine say its because of the intake..

I launch harder and have more pull lower and will continue to pull all the way up..

Personally, I think corporations try to make things better over time.. I think the cam is better suited and an all around better cam for the car.

I dont know of any 98-00 cars pulling 315+rwhp bonestock..

 

My 99 Ws6 made 315.0 RWHP and 326.2 RWTQ on a dyno jet when it was bone stock. It had 19,000 miles on it at the time, and missed like hell above about 5,500, lol.

My mom has a 2001 TA that made 305 and 320 or so when it was rock stock. Same dyno that I used.

I've got my dyno sheet scanned, if someone wants to host it.