68 340 4-speed distributor

halifaxhops said

All factory 4 speeds that year had Vac advance now some MP/DC came with just mechanical to be added on by the owner or dealer.

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I think the only 60’s and newer carburetored production Mopars without vacuum advance would be boats, and/or industrial motors. ???

I even think there was a lean burn motor with two vacuum advance modules.