Hello Mr Plumber,

You can do exactly as you have written above and the 7603 operating system will work just fine. Your engine will start, run, idle and accelerate. My only concern is that your cam swap will likely leave you running somewhat on the lean side and you will need to watch your Long and Short Term Fuel Trims to keep from running a too hot combustion chamber temperature.

You will need to increase your fueling inside of that 7603 tune across many cells in tables within its software. And for that, I have little advice except to say that it can be done within Tuner Pro RT. But I have never done it.

Rick