A Corvette with a Tach drive distributor must have the distributor properly positioned to achieve the proper timing AND proper placement of Tach cable coupling. Many distributors will not be able to achieve both and the most common reason is the distributor gear placement. Gear has a small indented circle. That indentation must line up with rotor. Gear will install either way. This is not a problem in other than Corvette installations. It is a tight fit between intake runner and shielding bracket and vac advance will prevent proper setting when gear is 180 degrees out. If it has been apart and not reassembled this way you will have a problem like you describe. The assembly manual shows a patron the proper angle. I am guessing this is your problem. Do most of you other guys know this?
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12-24-2018, 01:17 AM
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