Rebuilt 350 won't start
I am a noobie to engine rebuilding. Read a lot of books, watched videos, and read forums on rebuilding engines. Got a used 350 2 bolt and rebuilt it, new pistons, vortec heads, cams, intake. Reused distributor,Carter carb, mechanical fuel pump from my 305 engine. Now engine won't start. It will crank and sounds like it wants to start. Once in a while it will start, spike to about 4,000 RPMs and then die. If I play with the gas nothing happens. I think it is a timing issue. If I turn the distributor clockwise it just cranks. If I turn it counter clockwise then it sounds like it wants to start, but I maxed out on how much I can turn it. Reset the distributor and no matter which way I turn the distributor it still doesn't start, but it still sounds like it wants to. Any suggestions on how to trouble shoot this. Thank you for your help in advance.