360 Questions.. pardon my ignorance.

Honestly no idea what it looks like, I’ve just read a few threads on it.


I don’t believe my truck ever had one but at some point in its life it gained a replacement 360 that I have to assume came out of something that did. Vac advance is hooked directly to that port.


I expect some bounce in it but it was dramatic, now it’s back to only wavering a degree or so. Definite improvement.

My advance is not hooked to direct manifold vacuum, it’s on the “OSAC” port which according to other threads is where it should be. I can confirm if my carb has other ported sources but I don’t believe it does.


I have a cheap vacuum gauge on hand. I will try hooking it to the ports on the carb and see if any are ported or if the “OSAC” port is my best option.
Gotchya. Just my personal advice, but I would disable and remove the OSAC valve.