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| | | Forums66 Topics128,087 Posts1,055,982 Members48,430 | | 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!
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on the Internet for over 30 years! and not clogged down with Ads! Again, thanks! | | | | Joined: Feb 2004 Posts: 29,783 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,783 | "Dwell" is measured in degrees of distributor rotation. Are we comparing apples and oranges? If you're measuring crankshaft degrees of timing advance with a delay-flash timing light, you might be a little low. I usually disconnect the vacuum advance and set the engine speed to 1800-2000 or so, and set the initial + centrifugal advance to around 35-36 degrees. When the vacuum is reconnected, expect the total advance to go to about 45 or a little more during light-throttle cruise. If the engine doesn't get a detonation rattle on a long uphill pull in high gear, you should be good to go.
32 degrees of dwell, measured at the side terminal of the distributor with a dwell meter, is about right, depending on the part number of the distributor. You'll still need to check the total timing at cruise RPM, however. Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt! There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway Love your enemies and drive 'em nuts!
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