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Reload this Page Hole size for Factory Tach Grommet

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Old 08-18-2013, 08:57 PM   #1
71-C10
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Hole size for Factory Tach Grommet
Does anyone know what size hole I need to drill to route the Tach harness through the fire wall?

Eddie
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Old 08-18-2013, 09:07 PM   #2
lolife99
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Re: Hole size for Factory Tach Grommet
3/4" per the FAQ thread,...
http://67-72chevytrucks.com/vboard/s...d.php?t=446394
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Convert to disc brakes.
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