It has to be the increase stroke of the crank. That, and shaving the head, (a lot), are the only ways to increase the compression ratio that much if the stock pistons are used. I also am not sure why he would choose a Nissan crank over the Ford crank or how it could even fit. For what this guy paid for a custom crank, maybe he could of had a turbo installed to produce more power.What is his goal? Is it possible the guys yanking your leg?
