Yes, you need to have a low compression ratio to keep cylinder pressures in-line with the available fuel. I suggest you ask these same questions to one of the turbo suppliers. They can tell you everything you need to know about boosting an engine.
I have a 1978 corvette. the manufactured compression ratio is down below 9:1. my knowledge of turbo vehicles is limited, but from what i understand is that lower compression engines are better candidates for turbos.. more room to force air into. QUESTION: does anybody have more knowledge on the subject of actually turboing a 1978 corvette? ie. what type of turbo.. where to get one.. difficulty.. etc. any help would be greatly appreciated!