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Old Feb 26, 2014 | 08:38 PM
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Default sachs 1050 bolts

Where can I get bolts for sachs 1050 flywheel all I can find listed is .880 UHL in arps which is shorter than my 5.3 flexplate bolts. I figure I should have 1.3" or 33mm length since its roughly .400" thicker?
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Old Feb 26, 2014 | 10:18 PM
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I used these...


GM flywheel bolts...#11569956...



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Old Feb 26, 2014 | 10:33 PM
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Thats what was in my flexplate on my 5.3. All the numbers I came up with in searches lead back to that bolt as well.
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Old Feb 26, 2014 | 10:51 PM
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Originally Posted by kodyowenby10
I figure I should have 1.3" or 33mm length since its roughly .400" thicker?

I think these are 1.5" long...




Chevrolet Performance#809-11569956
LS Flywheel Bolt
Thread: 11mm x 1.5
LS1, LS2, LS3, LS6, L76, and L92 Engines
Manual Transmission Only
1/pkg (Requires 6 per engine)
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Old Feb 27, 2014 | 06:18 AM
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I used ARPs. 15k miles and no issues.
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Old Feb 27, 2014 | 07:01 AM
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The flywheel is not thicker at the crank flange. The application is an 05 3500 6.0, manual trans. But not sure if you're referring to the crank or pressure plate bolts. Some additional info:

Flywheel/clutch bolts: I bought the GM bolts for the flywheel/crank combo. I'm not sure if all bolts are the same length/thread. Note, the flywheel bolts come with a sealant. The crank flang holes are drilled al the way through, without the sealant oil from the pan can leak through.. If you reuse them, they will leak. Buy new ones. For the pressure plate bolts, I use the ones specific to the flywheel. This is important on the Sachs 1050, since it's threads are deeper. Pressure plate bolt #12561465.
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Old Feb 27, 2014 | 04:49 PM
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My sachs 1050 is .400 thicker at the crank flange than a stock flexplate. I called dealership today and they call for 23.5mm length for 05 silverado 4.8 and 5 speed which is what the flywheel is for and that is the length of my flexplate bolts that came in my 05 5.3.
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Old Feb 27, 2014 | 08:16 PM
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I have a 1050 laying on my bench, a set of the ARP bolts that are "suppose" to work, but are to short...and the GM ones that are sold for the 5.3 5-speed application. I'll set them all up tomorrow and take some pics...
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Old Feb 28, 2014 | 09:19 PM
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In case anybody else is searching for this info...

As you can see there are plenty of threads...








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