Dave, Denny and Tech, thanks a lot for all the info guys! I don't know how to read the leak down test. On my 302 what should it run or stay at then to know how good my rings and everything are holding? Reason I wanna know this is because the guy I bought this from never fixed this milage gauge or trip (whatever one you wanna call it haha) and doesn't know how many miles are on the motor. I would really like to know because if it's not great and will look like I need a rebuild sometime in the next few months then I need to save money ahead of time.