How much does mileage solely have to do with it? I have 177 on it now and put 100k on motor since the swap in 02. When I did the cylinder balance test few months ago everything was fine. I'm just wondering as I remember people saying those 302's could go for 250-300k easily if kept up the maintenance. Then again I remember someone from a forum thinking that 177k was alot of miles so.....................?