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Old 01-21-2012, 08:34 PM   #7
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 Coley View Post
The easiest and perhaps the cheapest way to beat this is to get another 2bbl carb with ported vacuum on it and swap it out to try it.
You can probably pick up a reasonable one for a good price off of Ebay or equivalent.....lots of Rochester stuff on there.
Good Luck
Coley
I have considered that and was going to do it until I saw the article saying you need manifold vacuum. It said that ported came around in the smog era so there would be less advance, less efficiency, hotter engine, just for hotter exhaust to reduce hydrocarbons. Man, that is some backwards thinking right there...
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