i was replacing the head gasket with a cometic mhg, and arp head studs, and when i put it back together last night, it doesn't run right. it has no power, but i got the cams and crank in the right places. im sure of it, it doesn't have a lopey idle at all, but its real boggy. i plugged all of the small vacuum ports on the bottom of the upper intake manifold, and blocked off the egr valve. when i tried to reset the timing, it wouldn't do anything when i put a ground in the circuit box thing like im supposed to. i made sure i stuck wires way down in there but nothing happened. that box has all that electrical grease, but i thought i was getting past all of that to get a ground. the check engine light is flashing 5 times, then 1 time. i think its a code 51, but im not sure, and don't know what that means. anything would be helpful, i was gunna take it to the track, but i can't get the thing running!!!!