retard timing mechanically?

connerray said

How would one retard timing with out the popular msd btm. Seems that 400 is a lot for an electrical box. Paying for the name? Is there some type of mech dizzy that can be setup to work?
I know the timing makes or breaks the motor due to detonation.
I'm in the very early stage of planing and learning but every time I search timing retard it comes up with the msd or I seen a pro comp one that didn't have good reviews.

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Here's a vacuum advance piece I have. On most units, when the vacuum is gone, it slides to a dead stop. On this one, when you add pressure to the same side, it pushes forward instead of pulling back, therefore retarding the timing. It has a second hose fitting in the front. Don't know why, but it may just be a release from any trapped air. Don't know what this unit is from, but you're welcome to it if you'd like to try it out. Bill