It cranks but no sparks
Hi guys, I have a problem that I know people here can help me out. First of all I have a 2000 LS and I just recent got the head replaced, after installing the new head and all the seals I crank up the car and in just one try the engine runs but kinda rough, then I decided to unplug one of my spark plug wires to check if I'm getting good sparks but as soon as I unplug it the engine died out and I try to start it but it's not starting. The engine cranks and getting fuel but I'm getting no sparks. I went ahead and change the whole distributor with no good result, today I just change my crank sensor and still not getting no sparks. Now my question is, what else can I check, I already check the timing belt and everything is good and in line. Please I really need help on this, I've been taking cab for work and it surely sucks and eating up my check. Any help would be really appreciated.