[FarmBoy7284]

How many HP is a stock 01 Duramax?

 

[myojunk]

300hp for the 2001

 

[TYREBOYZ_DEMAXIN]

dynos around 240rwhp to 250rwhp with roughly 460rwtqr depending on what size truck..

 

[Duramaxx]

I want to say 300hp 520trq for the 01-04

and

360hp and 650trq for the 05-07

I'm pretty sure thats what I read somewhere but don't quote me on that.