Manual Transmission T56 | T5 | MN12 | Clutches | Hydraulics | Shifters

need bolt size for stock torque arm

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Old 02-12-2009, 08:34 PM
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Default need bolt size for stock torque arm

i forgot to tighten the bolt on the torque arm on the mount by the tranny and lost it on the road anyone know the bolt size for stock torque arm. thanks
Old 02-12-2009, 09:07 PM
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Default Bolt

Should be a 10mm X 25mm long 1.5 pitch. The original bolt has a shoulder on it. If you can't find one like that, use a strong flat washer and lock washer.
It's kind of a beech to get in there but it can be done. Lil easier if you drop the trans a little.
Old 02-12-2009, 09:57 PM
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just had the trans out to put a clutch in and forgot to tighten it and went for a test run and klunk klunk aaahhh **** something broke. good thing it was just a bolt that fell out.lol thanks for the info
Old 02-12-2009, 10:43 PM
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If you are still in Fargo like your profile says, MAC's hardware on main Ave should have the bolt you need. I used to 'live' in the store when I did my first ls1 swap.
Old 09-17-2018, 12:58 PM
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Sorry for the bump, but I just wanted to say, posts like this are a perfect example as to why automotive tech forums need to thrive, despite Facebook being the cause for many forums decline in activity. I too lost the bolt for the torque arm to tranny mount on my car. Did a Google Search for, "T56 torque arm mount bolt size" and one of the results led me to this post from 2009. Awesome!
Old 09-17-2018, 07:54 PM
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Per parts layout catalog
GM 11500930 10mm x 1.5 x 30 10.9 grade
Old 09-05-2023, 06:05 PM
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Clutch thread, thank you.




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