Well last night i completed final round of the ls swap, put it all in and cranked it over, it started, but only runs on cylinders 2 and 3, i have spark and compression on 1 and 4 but nothin else. what do you think the problem is, i have tried a bunch of stuff but cant seem to figure it out.
please help

 

check your plugs...and do a compression test...

 

check ur fuel system