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Group: Forum Members
Last Active: 2 Years Ago
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Does anyone have a suggestion on who has the best electronic distributor that does not use vaccum advance for a y-block?
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Group: Administrators
Last Active: 2 days ago
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Any distributor that incorporates both a mechanical and vacuum advance system can be run in a ‘mechanical’ advance scenario only. If wanting a mechanical advance only for the ignition curve, then the vacuum advance portion is simply left unhooked and/or capped. If optimizing for fuel economy purposes without the vacuum advance portion hooked up, then both the rate and amount of advance curve must be modified beyond what you would use if running a combination of both the mechanical and vacuum ignition advance portions of the distributor. I use a large number of MSD distributors in engine builds simply due to the ease in which those particular distributors can have both the rate and amount of ignition curve easily adjusted. On the MSD distributors, the mechanical advance mechanism is located directly under the rotor which makes changes to the advance curve possible without a complete disassembly of the distributor.
  Lorena, Texas (South of Waco)
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Group: Administrators
Last Active: 2 days ago
Posts: 7.2K,
Visits: 203.0K
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I’ll add that the MSD 8383 and 83831 billet distributors for the Ford Y are supplied with the necessary pieces that allows the vacuum advance can to be completely removed from the distributor. I can picture where having the vacuum can on the distributor would be in the way on some applications and having the capability to remove it would be a plus.
Lorena, Texas (South of Waco)
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