i just put in a 350 carb with the xe268 comp cam.
the only way i can get the car to stay on is by having it advanced 12 to 16 degrees. is this too much? when i get it to around 10 degrees it wants to die it won't stay on long.

 

Assuming this isn't a computer controlled distributor, no, it isn't.

 

mine is advanced about 13

 

no it's not computer controlled. so 14-16 degrees is good?
also how far advanced is best ?

 

It's best to set it so the total mechanical timing (vacuum advance disconnected) is about 34-36 degrees BTDC. The timing you have at idle, up to max, and at cruise are adjusted for best characteristics from there - no starter kick-back, smooth idle, no pinging under part-throttle load.

 

ok. i think i got it. to a smooth idle start up is easy.
i was confused about the timing cause around around 12 degrees the idle gets smooth. If i go less it gets lumpy.