I've been doing some thinking. Would it be possible to built a twin turbo blown engine. Let's say I have a 350. Put a weiand 144 blower on it then feed twin turbos into the carb on top of the blower. If my math is correct at 10psi of blower boost(without turbo) is a 168% increase over atmospheric pressure. So if I have a twin turbo setup feed the blower with 10 psi then increase that by 168% then theoreticly I should make 16.8psi of boost at the manifold. But if you do the math that blower moves 708ci of air for every cycle of the engine to make the 10psi of boost, so I would need turbos large enought to feed 708 ci at 10psi at max rpm, right. Only problem I for see is air charge temp. But it would definitely be intercooled. What you think. Could it work. I know its not practical. That's not what I'm going for. I'm going for the wow factor.
Rick Dobberton did that in 1982. Twin turbos feeding a roots blower in a box Nova.http://www.google.com/search?q=rick+dobberton+nova&tbm=isch&tbo=u&source=univ&sa=X&ei=JR33Ufj1BIHA9QS76IDgBg&ved=0CC8QsAQ&biw=1920&bih=932
That's kind of what I had in mind. It looked like his carbs where mounted before the turbos. I don't really like the looks of that. I was thinking put a carb on the blower and run the turbos through it like a blow through carb setup.
it will run much better,and help minimize the chance of burning pistons if you use port fuel injection. this will also allow the use of a hat type throttle body with BIG cfm.this will reduce back pressure from the turbo compressors.