Manifold and ported vacuum

[Ricko1966]

Yes, of course. Im talking about which of the ports people actually use. I’ve never seen one in real life use manifold vacuum, but alot of guys online sure does.

Damn near every car made in real life, prior to emissions concerns ran on manifold vacuum. Pics from Edelbrock installation guide.

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[13matsc]

I’ve ordered myself a timing light with adjustable advance and will try to do it myself this time. Can anyone help with what the markers on the timing tab should be?

 

[83Stepper]

I’ve ordered myself a timing light with adjustable advance and will try to do it myself this time. Can anyone help with what the markers on the timing tab should be?

First large indent is 0 deg (TDC), first tab going to the right in the pic is 4 deg before top dead center (btdc), next is 8 and bet you guessed the third? Going to the left, tab is -4 btdc, or 4 after top dead center. Small lines between the indent and the tab are 2 degrees each, 2/6/10.