a 302 is a 327 block with a 283 crank, Chevy built the 302 for trans Am racing, as the CID max was 305, and they only had the 283 at that time. The 302's were meant to wind up quick and sustain fairly high RPM's, they worked very well for what they were built for, but if you want a engine with a lot of power on the bottom end, you do not de stroke an engine, you stroke it.