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Re: Recommendations for a filter to get the tach working.
2nd on the stock HEI having a Tach connector. If a call to Summit doesn't reveal a good tach connection on the MSD unit, easy solution might be replace distributor with a good OEM HEI unit. For a stock or near stock motor, they have plenty of juice.
If the intake is one of the Performer or Performer RPM versions, they are a nice upgrade over stock and rarely cause any compatibility issues.
Most folks block off the crossover ports on the intakes when doing the swap. If yours is a daily driver, might consider a new set of intake gaskets if you do a dizzy swap and leave the crossover ports open. A little heat in the intake usually helps a daily driver, especially for colder climates, but make sure you have a good insulating spacer for the carb. The intake likes the heat but the carb really doesn't.
Headers are a mixed bag for a daily driver. Ceramic coated ones avoid most of the burnt plug wire problems but cost more. I have read a few threads on this forum that say the vortec exhaust manifolds flow well for stock daily driver applications.
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