Bone stock... . my truck did 139. 9hp at the rear wheels... (no torque #'s... )
By just removing the cam plate and adjusting the AFC... I made 258. 6hp (no torque #'s) at the rear wheels.
I then went to 271hp/671ft-lbs. after bumping the timing to 16. 5°, installing Piers' 3K governor spring kit, and putting on a BHAF.
I won't even talk EGT's, since you should be monitoring those all the time anyhow... .
Matt