Started the car up, ran great for about 1 min and then heard a little bang and then my RPM went to 0. I then proceeded to open the hood, saw that my exhaust cam gear was just kinda hanging there. Pulled off my cam gear cover and YUP I seized my exhaust cam. I pulled the cam gear out, and a big chunk of my cam came out with it, WTF!!!!!! When I put the car back together I put a shit load of preassembly lube all over the cams. What could cause this to happen? My intake cam had no problem with getting oil, so why does my exhaust cam get none? Need some help. Already bought a new head, but before I put it together I want to know what happened.