i bought a 2500hd with an lq4. its got machined ported 241 heads and a btr cam, 212 intake 218 exhaust. so i think its stage 1 truck cam. it also has long tube headers. i was curious to know what kind of power you guys think its making with stock intake, injectors, and a mail order tune.

 

Stock wheels and tire too?

The factory injector will limit your power, they will be out of fuel because they are only 25lb/hr. I'd go to 31lb/hr injectors to give you more headroom.

I'd say mid 300's at the tire because of the 4L80e and 14 bolt rear end.