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Old 01-21-2012, 08:30 PM   #6
cppursell
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Join Date: Dec 2008
Location: San Francisco, CA
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Re: Vacuum advance issues

Quote:
Originally Posted by Wrenchbender Ret View Post
The 307 was designed as a low emission engine. The factory initial timing was about 2 degrees.
I didn't know that and will take it into consideration. This 307 has 283 power-pak heads and a mild isky cam in it, so I'm not sure if that initial timing still applies.

I think I've decided what to try: install an adjustable vacuum advance and play with all three settings (initial, vacuum, and mechanical) until it runs well without ping. The tutorial I mentioned above seems to make sense to me and will try to follow that.

This whole thing is an adventure for me! Keep any other advice coming!
Thanks
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