I have a 2003. How much HP does the engine have without the SC and how much does the SC give.?
Id say 270 crank hp on our N/A engine, and Id say the Eaton gives us about 160 crank hp. more.
A very basic and vague rule of thumb - 1lb of boost = ~ 20 crank hp. On average, we see 8lbs - there's the 160hp. Ford rates our engines at 390 crank hp, but I believe thats low due to insurance regulations. the average 03/04 dynos at 360rwhp stock. By Ford's numbers, drivetrain loss would be only 7.5%??? Yeah right - nice try Ford!
Assuming a 17% drivetrain loss (average is between 15-25%) - thats more like 430 crank hp.
So, deducting the 160hp the Eaton gives us, the N/A engine crank hp would be approximately 270hp. This sounds about right due to the low compression of our motors which need the boost to make them come alive.