I have a 393 Windsor Stroker. It has an MSD Digital 6 ignition and a Mallory vacum assited breakerless distributor. The vacum hose is connected to the timed port (upper) on a Holley 750.
With the vacum disconnected, I have 12 intial and 34 total time. When I connect the vacum the intial stays at 12 bit the total reads 45+. Am I reading this wrong? Any recomendations?
CaliforniaCobra
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