I was kicking around the idea of stroking my block as well but someone brought up the point that ,the longer the stroke the faster the pistons are moving to complete equal ammounts of revolutions in a given time. More stress and heat on the engine. Also more heat on the block if you bore it out ,and I have no idea the margine you have between the water jackets. Not to say your idea is a bad one ,but from my personal viewpoint ,the more power you squeeze from an engine ,the shorter it's lifespan. I would recomend you deck the block to increase compression and port/polish the head. Toss on a decent 2 1/2" free flowing exhaust and minor tweaks to fuel and air delivery. If that doesn't satisfy ,turbo is probably what you need. Just my 2 cents
