340 timing need some advice on rufff timing

no the motor was all ready in the car was just rebuilt before i got the car so didnt fig i would tear it down it ran pretty good before but it all ways had mood swings.
after i bought it last summer i noticed it some time run like hell other times just lay over
fig it was carb car had been inside a garage for 15 years with minimal starting time.

had carb done seems alot better but i still have issues some where sense the mood swing is back gonna go try to get a timing tape now dont know if it will help much i have just been slowly cranking here round till the idel stops going up and she starts knocking just found that point.
im gonna go hook my vacuum up and take here for a ride