Blown 400+ horsepower easy? How much boost ?

[420nitro]

Originally posted by T5superduty
How much boost would you people say a non-intercooled blower would take to give me 400 + horsepower at the wheels with my set-up ? Intercooled ?

At sea level air weighes 14.7 pounds. In theory to double your horsepower you just simply need to double the pressure. (14.7 pounds of boost). But that is gross gains. Now you need to subtract what it takes to make that power. (net gains)

So you are looking for around a 33% gain.
Answer to your question would be about 7-10 pounds of boost for a net gain of approx. 100 horsepower at the wheels. This is just in thery, but you get a good understanding of where you need to be. I would intercool it too.