Camshaft break in prior to setting timing on rebuilt 289?

Hey KS65stang,
Reading through your thread, I think you are basically in good shape. I'll offer, connect an engine vac gauge and get a reading. It'll indicate your baseline, not to mention setting your curb idle quality. Those hot headers can be a lean condition. Did you calculate your CR? What I did to keep my wires from touching headers, was to custon cut each one, so there was no sagging anywhere. Nice work and good luck with your tweaking.....
BTW, this is a great articulated vac gauge reference...http://sbftech.com/index.php/topic,3020.0.html