ok i just swapped out a 305 to a 350 carbed motor, there both carbd. anyways i put new plugs in it gapped .45 on the gap gauger. the problem is it will rotate but wont fire, i got both spark and gas going to the engine. while attemptin to start and adjust timing itll shoot gas and puff out the carb. we checked it it was 180 off. fixed that and now it does the same thing. the batt is only givin me 8 cranking amps. would that be a problem staritn? or am i still outta time?

put a battery in there

how do you know you are getting spark

find no 1 tdc and set the plug wires

How on earth do you know it's only giving you 8 cranking amps? That's not enough to even come close to cranking the motor over, not that there's any way you could even measure that anyway...
is it spinning the motor over remotely fast enough?
If you think it has fuel, then it's spark. No questions, that's the most common problem in your shoes now.

Crank it over while you adjust the timing.

i have a volt gage reading 8 amps. i charged it and it fired right up

That doesn't make sense.
A volt gauge would read in volts, not amps. 8 Volts is also low.
Anyway, problem solved eh? Right on.

ya sorry i fudged up in my writing of the description. but ya it starts on first try now. its smells like its running real rich threw he exhust when i start it. do i gotta adjust the carb? also whats the proper way to time my 350? i have it set a 8degress on my timing tab. im not sure what the timings supposed to read

Set your timing to best power, without any detonation. Try 14* or so.
Use timing tape for the right size balancer.
You'll need to close your throttle blades to bring your idle speed back down. Then set up the idle mixture for best vacuum, etc etc.

Tuning 101 man, do a search on the carb board for more detailed info. Or start a thread if you REALLY GET STUCK. Then make sure to give enough info to get some help. Right now I don't even know what carb you have.

ok i have timing tape on my balancer. i have an edelbrock carb model 1406. so 14* aint to much for my motor?

advance it untill it bucks a little and bring back (retard) untill you get a smooth idle

tighten it down to the point where it is kinda hard to move and drive it

bring it up to about 3500 rpms in second gear and keep on advancing it untill you get spark knock

make sure your car is at operating temp before you take it to 3500

as soon as you get spark knock pull over and back it off or retard it

go one more pass to make sure you dont get any more detonation

go home and shut it down

start it up after 20 min wait time

if it is hard to start then you have to retard it a bit

when it turns and starts freely after very small increments of retardation tighten it down and put a timing light on it and record

its probably 14 or very close to it like sonix said