Anyone care to share their tuning specs if they are using a Holley 770, Performer RPM intake and MSD distributor (on a big block)? So far I have tried 32 to 38 degrees total timing, left the blue bushing in the distributor and changed the springs to the light blue to get all advance in by 3000 RPM. Left the carb jetting stock (probably could lean it out some as I'm at 4800 ft.) Haven't seen much in the way in performance increases so far. Thanks, Bob Belz
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