Hey guys I have another question about the bottom end on a 6.9. It has that first gen banks turbo. I have heard that the bottom end has to be re-built every 100 thousands miles if you don't maintain it well but I maintain it very well, but the shop I got it from has rebuilt it. I was just wondering how much hp and torque and psi it can handle before goin threw it with steel crank and rods and upgraded psitons.

 

Go through it with steel crank and rods? Both are forged steel. You could ceramic coat the pistons I guess. Rumor has it one made 670 before the main caps had enough. You should be fine till then.