Ported or manifold Vacuum to Dist.

Mattax said
'67 AFBs, Vacuum advance connection is pretty high.
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The spark port is about middle of the transfer slots, way above the idle discharge port.
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Be interesting to see if other versions were different.
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Hey Matt, I dug out my carb. You were right. Looks like ported vacuum. The nipple is quite high though. A strange looking slot though.

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