retard timing mechanically?

I'm not sure. The motor is sitting on a stand right now... the turbo project won't start taking place for a few more months.
What are you guys running for timing? How much are you pulling? I'm aiming for the 12-14lb range...
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On my Hemi I am running an MSD pro-billet distributor with weak springs and a 10 degree bushing. 14 pounds of boost and 31 degrees of timing.