Timing questions

Sorry,
Some of the above advice is incorrect. Move your dist to get the HIGHEST idle speed. Say it is 30* with THAT cam. Tighten the clamp. Re-adjust idle speed. Put into gear. It will NOT stall. And it will not stall because the engine is making more hp with the added timing & can carry the extra load. This procedure is just a test procedure.

What you have to do now is 'design' your ign timing curve around your new found idle timing; many ways to do it, some described above.
Probably the easiest method is to use an adjustable vac adv unit connected to manifold vacuum [ MVA ]; you can Tee into a bake booster hose or vac fitting.
The beauty of MVA is you can leave your dist in the stock position & add the timing at idle with the VA, which is load sensitive, another important benefit.
More here on MVA, scroll down to post #6. Last 4 lines most important.
www.hotrodders.com/forum/vacuum-advance-hooked-up-directly-manifold-bad-47495.html