Ok guys here is the thing. i have been wanting to build an all out street/track truck for some time now. I want to get a '90-93 454ss and build it or start from scratch with a small block. I know a guy selling a 4 bolt main LT1 block from a '95 corvette for $250. He says there is a main and a rod bearing spun in the engine and it needs to get rebuilt. i think this would be a good place to start for my build. I have seen folks on here make stupid hp numbers with their LT1s and I am very familiar with LT blocks and want to stick with them if I start from scratch with this truck build. My question is...how much power is a 4 bolt main LT1 block capable of producing NA...dont matter if its stroked or not? I dont want to do turbo or superchargers or nos, just a straight NA block. is it capable of being ported out to a 427 (4" crank and 4.125 bore)? what is the most hp that you guys have seen from a NA block? Im looking to get well into the 6-700 hp range if its possible and am willing to bore and stroke to the maximum allowed without destroying the block. also want to spin it to 7k rpm if possible.