Vintage Oldsmobiles Curved Dash, Limited Touring, Models 40, 53, 66; Series 60, 70, 90

Timing marks

Old July 22nd, 2018, 07:33 AM
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Timing marks

I have a '59 Super 88 with a 394 engine. I'm trying to set ignition timing, my harmonic balancer has 3 cuts in it, but my factory manual only shows 2. Does anyone know what the 3 marks are?
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Old August 2nd, 2018, 05:06 PM
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First mark is TDC. Second is 5 degrees BTDC. Third is 10 degrees BTDC.
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Old August 3rd, 2018, 04:36 PM
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Thank you.
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