[Woodchuck]

Autolite 1100 with or without SCV?

Load-O-Matic or "dual advance" distributor?

Vacuum advance source coming from where?

PCV system or draft tube?

Static timing set to what?

 

[Woodchuck]

With SCV

Load-o-matic with Pertronix two, Pertronix ignitor, Pertronix wires, new spark plugs.

Vacuum advance coming from carb. (It's doing something, because when I pull to set timing, the timing drops)

PCV system (valve and grommet are new)

Timing set at 12 degrees BTDC, as per the shop manual.

Sounds good. Power brakes or not?

 

[Woodchuck]

Manual brakes, manual steering.

Hmmmn.

Try disconnecting the vacuum modulator line and plugging it and re-check AFR.