Re: Dual points for increased dwell??
As I understand it, you get spark when both sets open. The coil is charging when either set is closed. It reduces the time it takes for the points to close. Once the burn is established spark is not needed.
Michael gave a great explanation. I do know Ford was putting dual point distributors in their 289 hipo engines and I assume it was for high revs. They even ran a larger alternator pulley to not burn it out. But like Michael said, it was probably more of a gimmick than something that was actually needed.
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