rebuilt Cylinder head now wont start, what next Options

[csscza]

just like it says I got a reman cylinder head and changed all gaskets put everything back together and now wont start. So anybody have an idea as to what I address next? This is my sons car and I really want to get it going. Thanx in advance.
Could it be timing? camshaft position? Im pretty sure I got all the timing marks lined up. Distributor position? The search begins.

[Jamchell]

Well a Celica will still run if the valve timing is off by 1 tooth you will just notice a severe loss of power, more than 1 tooth will net you the "try to start" symptom. Also did you mark the distributor housing, often times the housing will retain a "bolt head outline" which will help you re-align it if you forgot to mark it.

It definitely sounds like you have a timing issue now, I'm almost positive something didn't get aligned quite perfectly on the install,(left field... perhaps the distributor cap got damaged). You might have to backtrack and recheck everything ,maybe post a picture of your timing marks too. No worries, it happens to us all at some point.