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tap for manifold bolts

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Old 03-18-2006, 06:58 PM
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Default tap for manifold bolts
Anyone now what size tap i would need to chase the manifold bolt holes in my 5.3s cyclinder heads.
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Old 03-18-2006, 10:42 PM
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8mm.....
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Old 03-18-2006, 10:49 PM
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8mm-1.25
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Old 03-18-2006, 10:55 PM
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Originally Posted by 04BlackSilverado
8mm-1.25
Sorry...forgot the pitch on the thread
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Old 03-18-2006, 11:26 PM
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Thats ok, I wasnt sure. I just orderd header bolts and I had to check anyways. I need to get a tap as well......
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Old 03-19-2006, 01:31 AM
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thanks for the help
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Old 03-19-2006, 10:28 AM
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6mmx1.0 for the intake holes and 8mmx1.25 for the exhaust holes.

Good luck.

Richard
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