I am about to get a factory rebuilt tranny from GM. What kind of hp can i put in front of it? How stout are they. I am not going cam cause of my recent drive shaft breakage so i will just go bolt on and stall. What you have to say about that..... But am looking to swap for a 6.0 soon...

 

I think a stock 4L60E will hold around 350-375rwtq....not sure of the HP but around the same levels I believe.