Got my motor running tonight. I feel like I accomplished something. what does every one think about the break in period. I already changed the oil after about an hour of idleing. I was thinking about 250 miles and change the oil, the at another 250 miles change the oil and let her rip. motor is as follows stock short-block new rings and bearings ported windsor jr heads F-303 cam typhoon intake full lengthes and most every other bolt on its heading off to the paint shop tomorrow Woohoo fresh paint and motor!