How big of a shot can the stock internals on a 5.0 take before you tear something up. I've heard from a few people they can hold up to 125-150?? I have a friend who thinking about spraying his car.
well on my car my magical number has been around 550 and then the block splits!!!!! check everything plugs and fuel and spark and if u have it tuned right a 150hp shot of dope will do u good!!! it will run like a bat out of hell:fm: