Well about two weeks ago with put the engine back in the car and got it all in and back to stock. Well we started to do the timing but we could'nt get it to stay running. So I drop it and a shop to have them fix it and they said the number one pistion had a hole in it(they never took the heads off). But the timing marks on the timing chain was right and the engine ran fine before we took it out. So now me and a buddy are going to rip off the p/s head and find out whats wrong?.... Do you guys know what it could be????