1st you need to check timing.
Only go to someone familiar with old Pontiac's.
Otherwise learn how yourself(you should anyway).

Just get a cheap timing light. No need for a dial-back one.
Find out what initial is by removing vacuum hose from carb(plug port at carb).
With RAIV cam you'll need 16-18 initial.
Total about 34-36. Maybe 38.
RAIII cams will be alittle less, but not much.

You may have to adjust carb some during timing adjustment depending on how far off everything is.

Final carb adjustment is made after timing is set.
RA cams like about 900 in park, and 700 in drive.
You may get by with less rpm's though.