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T56 SWAP: need help with bolt sizes

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Old May 6, 2021 | 10:07 PM
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Default T56 SWAP: need help with bolt sizes

I'm doing a manual swap. I got all my parts separate (trans, torque tube, shifter, etc).
No bolts came with it. And I can't seem to find the info on the internet anywhere. Throwing a Hail Mary that my corvettes brethren can help me out.

I need the size of these bolts:
Torque tube to trans
Shifter box to torque tube
Shifter to shift rob (pinch clank thing)

And Torque tube to bellhousing (if they're not the same as the auto TT to bellhousing)

Hoping to pick these bolts up ASAP tomorrow if someone knows the sizes.
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Old May 6, 2021 | 10:14 PM
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What bolts do you have? Post a picture.

I just had my whole driveline out.

Trans to torque tube and torque tube to bellhousing were all the same. 13mm head that was kind of rounded... sorry im not at home right now to measure anything.
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Old May 7, 2021 | 02:04 AM
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Originally Posted by rjacobs
What bolts do you have? Post a picture.

I just had my whole driveline out.

Trans to torque tube and torque tube to bellhousing were all the same. 13mm head that was kind of rounded... sorry im not at home right now to measure anything.
I don't have any bolts at all. Trans, torque tube, bell housing, & shifter all came separate & without bolts.
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Old May 7, 2021 | 06:47 AM
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I would very surprised if the bolts for TT, BH, and trans etc were different. The shifter box you should be able to go to a dealer and them tell you the answer to that. Its a torx bolt. Shifter linkage is the same as the shifter mount.
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Old May 7, 2021 | 10:49 AM
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Originally Posted by Stephen Meredith
I'm doing a manual swap. I got all my parts separate (trans, torque tube, shifter, etc).
No bolts came with it. And I can't seem to find the info on the internet anywhere. Throwing a Hail Mary that my corvettes brethren can help me out.

I need the size of these bolts:
Torque tube to trans
Shifter box to torque tube
Shifter to shift rob (pinch clank thing)

And Torque tube to bellhousing (if they're not the same as the auto TT to bellhousing)

Hoping to pick these bolts up ASAP tomorrow if someone knows the sizes.
Is it me your is that stud bent?? and your going to need to nuts to connect to diff.
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Old May 7, 2021 | 04:04 PM
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Torque tube to trans M10X1.5X40
Shifter box to torque tube M8X1.25X27 TORX There is 3 of these and 1 of them also holds pinch clank thing
Shifter to shift rob (pinch clank thing)

And Torque tube to bell housing (if they're not the same as the auto TT to bellhousing)M10X1.5X40

Last edited by Smoken1; May 7, 2021 at 04:06 PM.
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Old May 8, 2021 | 02:29 PM
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shift box to torque tube you can use old header bolts if you have some, same with the shift linkage to shifter and actually a header bolt is better than the torx bolt in this location
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