You positive that the cam timing is not off 180 degrees??
Me and my bro (mechanic) stopped by my buddies shop onetime, and they were having trouble getting a B16 civic started after they swapped in the motor... These guys r pretty good, but they couldn't figure out why it wouldn't start up.
We mentioned it SOUNDED like the cams were 180 degrees off, and they were like "no way man, we checked it like 3 times already"
They were so confident...
Guess what, they were wrong! It was 180 degrees off...
Make sure it's correct, could be your problem...
If u got gas, compression and spark, then it should start...