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Click on image for the lowdown. 
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| | | Forums66 Topics128,036 Posts1,055,450 Members48,422 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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For helping keep this great
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on the Internet for over 30 years! and not clogged down
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| | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 | Do you have a timing light? If so, follow the procedure in the Shop Manual. If not, do you have a vacuum gauge? Adjust the the distributor to give maximum vacuum on a warmed up engine at idle. Some people have logically suggested to set for maximum vacuum at or around cruising RPM, around 2000. | | |
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