I am going to do a 347 stroker for my car..But I know that if I pull the motor, tear it down, send it out, get it machined, finally done and in the car I will have some decent amount of down time. What year block of a 302 should I look for? I want to just build a motor outside the car, then dump it in when I'm done. I've heard earlier year 302s are stronger than current ones, otherwise I would just pop for an exploder motor. Thanks!