You gave a lot of information and now I understand it a bit more.yea, I have to change more parts like the drive shaft rear end so on. I will probably stick to blow by also because since its still a carb it should be easier to understand and learn. I have been looking at used turbos and I feel those are better because I don't plan on running too much boost and also I plan on making it a fun daily driver. I have thought of diesel turbos, but don't know much about the differences. Thanks for all this though, I will continue on my quest on making a list and seeing how much it would cost.You need a carb specifically set up to operate in blow-thru. They're readily available from a number of carb companies. Or you could do one of the fuel injection setups that works in place of a carb.
You use a wastegate (which bleeds exhaust before the turbo) and boost controller. There's multiple setups for both. The most simple is a manual boost controller (which is basically a ball and spring valve) and an internal wastegate that is integrated with the turbo. There are also electronic controllers and external wastegates. You can choose a wastegate and run it off spring pressure without a boost controller with the proper spring but then it will open progressively which can alter the spool characteristics.
I like MHI (Mitsubishi) turbos because they are not picky about oiling and last a long time. Garrett turbos are sometimes cheaper with more options available but they simply are not as stout and you can over oil them. A lot of people grab diesel turbos out of the junkyard (like Holeset and Borg-Warner).
Unrelated thoughts? I now see where you said he should look at other sites. I agree. I disagree that putting a turbo on a lawnmower engine is the right analogy for this situation though. That's just my opinion.
I knew of a guy who took the 4-door Chevelle that was rotting in his inlaw's yard, put in a stock 350 Vortec that he rebuilt himself, his own homemade blow-thru carb, and the biggest Borg-Warner turbo he could find on Ebay, hung on a cheap twin turbo hot side he reworked himself for single turbo, and ran 8s on a 10.5" tire. Stock worn out suspension. Powerglide (of course) with a custom converter. You have to have a little bit of knowledge, you don't need a huge budget or even incredible fab skills.
He did hurt the motor on his first 8-second pass but ran numerous 9-second passes all fine and dandy before that. He got a little more serious after that but this is the car:
I can't remember every time the Rotsun broke but I don't ever remember it being specifically because they slapped a turbo on a non-turbo engine. At least not since they put the 5.0 in it.
I think the idea some of you guys have about turbos is exactly the opposite of reality. Head over to The Turbo Forums or Yellow Bullet Forums and you will see lots of guys slapping cheap turbo setups on everything under the sun and getting results. A little knowledge is the key.