1965 Barracuda with 84 318

swing69 said

The mechanical advance will only give me 23 degrees as set - on top of the 13 intial. with no vacuum connected, I get to 36 degrees by 2500 or so...... no load on engine. with the vacuum connected to ported vacuum....its opens up to the low 40s..... I could adjust the vacuum advance to give few degrees.... I'll play later on with that once the car is on is on the road. Right now, still no interior or glass.....

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Ah OK, sounds like you are getting the vacuum advance at the higher RPM's when revving the engine while sitting still...is that correct? That would be expected.

I'd not play with it 'til the car is sorted out then add more vacuum advance a bit at a time when you can run it around and test different settings with all sorts of loads and speeds.

You just need a lawn chair installed with a couple of rachet straps, and a set of goggles and you are good to go! LOL