I read most of that long post and sorry cammeddrz but you are not right!!!
First off if you were to tear down a 100k GM engine you would have to boar that junk as it would have good ridge at the top of the cylinder meaning that it has boar taper. You would be doing a full rebuild on the bottem end. You would need to find a good set of castings for that kind of HP and most of you chevy fags want gold prices for them. And oh ya they came from a corvette to
the heads would need a valve job if they were not cracked (mostly late model). I dought that you could build a 425 dyno proven (not guessed)HP chevy junk for 700 dollars. I know that you can build a 350HP Dyno proven junk yard 302 for less then 700 dollars as we have done it
. Stock 96 Explorer V8 from the junk yard with a Ford F-cam, Stock 24# injectors and an aftermarket 76mm Mass air meter all controlled by a factory Ford Mustang computer and wiring harness. A little home head work and milling, a better cam, A better intake and 400+ HP is very reachable
. Its cheaper to build a big CID small block Ford then it is to do a chevy and you can get a lot more cubes with the Ford stock block then you can with the chevy.