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Join Date: Aug 2008
Location: central new york
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ignition timing for group b cams

Hi, have been slowly working on an 1977 3.0 930 engine. I came across some used group b cams ground by web cams in nice shape and installed them. Anybody out there know the ignition timing specs for these cams? Thanks john

Old 08-01-2018, 09:07 AM
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Call web cam and the secretary will send you a spec sheet.
Bruce
Old 08-01-2018, 12:36 PM
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Ignition timing or cam timing?
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Old 08-02-2018, 08:23 PM
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Ignition timing, will try web cams. I have the duration intake is 233degress exhaust is 220 degrees.
Old 08-03-2018, 08:12 PM
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Ignition timing is a function of compression ratio(cylinder pressure), combustion chamber size, peak torque RPM and mixture...

Web-Cam will not be able to help...they can only provide cam timing specs...Are you sure you don't mean " What intake lift dimension at TDC overlap does this cam require" ?

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Old 08-04-2018, 08:22 AM
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