The engine could care less about how much boost it sees, its the horsepower and torque that makes the sleeves and parts fail. Timing is everything...to little timing it can mis fire and break up and overheat the cylinders and BOOM. To much timing and its almost the same situation.
The correct term is "cylinder pressure"! To much of this cause's bad thing's to happen if the parts are not up to the task!
98 Trans Am, 427LSX,94mm Turbo
Thanks to Josh@ Kentucky Turbo for the Turbo Setup