C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Bolt torque numbers

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Old Jul 4, 2006 | 02:32 PM
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Default Bolt torque numbers

Can someone who has a GM manual please tell me what the torque numbers for the D-44 self tapping bolts are?

Thanks.

Also, is there a thread for the procedure on adding a drain bolt?
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Old Jul 4, 2006 | 06:28 PM
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I'm not aware of any self-tapping bolts in the rear end. Are you talking about the cover to differential case bolts? If so, you'll need a manual for the sequence. Torque should be 30-35 depending on bolt location. This does not count one camber bracket bolt on either side. I used to have a link to the sequence and other info but no more.
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Old Jul 4, 2006 | 07:14 PM
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I have a manual right here but I'm not sure what bolts you are referring too. If CK has it right the torque spec is 30 ft. lb for bolts 1-5 and 35 ft. lb for bolt 6-7.

The pattern looks like something like this:

4.........5

3..........1

7....2.....6

Last edited by -=Iron Mike=-; Jul 4, 2006 at 07:21 PM.
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Old Jul 4, 2006 | 08:35 PM
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He's talking about the C-beam bolts. They are self-tapping because a new housing has no threads. I know this, because I recently bought one, but can't help w/the torque specs as I have yet to swap out my D36. Sorry, maybe someone else can help. Dave, where are ya?

Rich K
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Old Jul 4, 2006 | 08:39 PM
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Originally Posted by thirdtimevetteowner
He's talking about the C-beam bolts. They are self-tapping because a new housing has no threads. I know this, because I recently bought one, but can't help w/the torque specs as I have yet to swap out my D36. Sorry, maybe someone else can help. Dave, where are ya?

Rich K
Explain. The C beam bolts have nuts up on top.
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