Time to tune

Hello everyone!

As stated in a previous thread, I got the rebuilt 340 up and running yesterday. Despite all the hurdles, everything seems to be going well.

I'm going to start tuning this week and wanted a little advice. Here is what I have 68 340 bored .040 over, MSD 6A box with their billet distributor (no vacuum advance) Comp .454 cam. Edelbrock 650 Thunder AVS carb vacuum secondaries. J heads. The car is going to be street only.

From what I have read and researched:

Timing:
Warm engine. Set idle and get a vacuum gauge and tune for max vacuum minus 2". Check initial timing. Raise RPM to 2500 - 3000 and check total timing. Take total minus initial = * of mechanical advance. Adjust springs to suit curve.

Does this sound about right?
Anything I missed or should look out for?
Is the 2500 - 3000 RPM range too high to check total Or should should I increase the RPM until timing stops advancing?


Thanks again for the help. If I missed some info on motor let me know.