LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

LT1 Crank Bolt Tap Size???????????????

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Old 04-13-2006, 07:50 AM
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Question LT1 Crank Bolt Tap Size???????????????

Anyone know the crank bolt dimensions for the tap to chase the threads? I just want to double check it.

I believe it is a 7/16 20

Can anyone verify that?
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Old 04-13-2006, 08:08 AM
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Re: LT1 Crank Bolt Tap Size???????????????

7/16" 20 is the size of the damper bolt on my 95.

Mike
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Old 04-13-2006, 08:27 AM
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Re: LT1 Crank Bolt Tap Size???????????????

Thank you
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Old 04-13-2006, 09:02 AM
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Re: LT1 Crank Bolt Tap Size???????????????

Yup, 7/16"-20 is right, just put one in last week.
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