i'm building a ls turbo. I want to make 400-500max horsepower.
i have been boosting the car for about a year at 12psi with all stock internals.
what do I need to do to keep it running reliable??
thank you

 

we do alot of turbo b series motorsa and in my findings a stock bottom in will hold 4-5oo all day the only thing you really need to focus on is making sure you keep an eye on the bearings but even that we have seen hardly any failures