Quote:
Originally Posted by AcampoDave
Mr. Hat, are you sure your distributor has a functional mechanical advance? Even a 350 is a dog if that doesn't work.
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Good question!
I did test this a while back. I will admit, when removing and replacing the vacuum hose onto the distributor, it did not change the timing, or advance the timing. However, with the vacuum hose connected, I revved the motor and I could see the timing advance. At least, that is what I believe was happening.
At idle, the vacuum coming from the base of the carb does not change the timing. It only seems to affect the timing when the throttle is opened.