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Duramax 6600 Discussion Forum for the Duramax 6600 Diesel Engine, including the LB7, LLY, LBZ & LMM engine specific topics.

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Old 03-13-2003, 07:58 PM
CPMac632 CPMac632 is offline
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Red face

I tried to get a starter ring gear for the flywheel of a six speed truck and was told it was discontinued. Does anyone know who manufactures the ring gear for GM. I would really like to find a different way to get one rather than buying an entire flywheel.
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Old 03-14-2003, 12:33 AM
SoMnDMAX SoMnDMAX is offline
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What about getting an Allison flexplate and "borrowing" the ring gear from it? Just a thought.

Or, you could find something from a different make that shares the same tooth count. I don't think the bore diameter in the ring gear is a concern for what I think you're doing...

[ 03-14-2003: Message edited by: SoMnDMAX ]</p>
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Old 03-14-2003, 07:33 AM
CPMac632 CPMac632 is offline
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Good idea. The allison flexplate is $88 I believe so that is a possibility. I was wanting to buy them in a larger quantity but that may get me going. I was thinking someone would know the supplier for the oem units so I could try to order some from them.

[ 03-14-2003: Message edited by: CPMac632 ]</p>
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Old 03-15-2003, 05:13 PM
JMJORDAN JMJORDAN is offline
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Question

I am hoping this a sign that they will discontinued the rest Dual mass set up and come out with a conventional replacement. That is what your doing CPMac632?
Luk makes the present gm dual mass setup but they also make a dual mass replacement for F@rds. I am sure you know this I just find it funny that they would make something they know doesnt work!
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Old 03-15-2003, 07:17 PM
CPMac632 CPMac632 is offline
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Yes I'm having a replacement made. I am afraid that the dual mass might not be discontinued for a while. The parts dept. told me I should just buy an new flywheel and the ring would come with it. I talked with luk because I knew they made the flywheel but they said they didn't make the ring gear and didn't offer who did.
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Old 01-16-2004, 11:02 PM
tcelano1 tcelano1 is offline
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Does anyone one here know what the tooth count is on the D-max starter ring? I can see the teeth on the flywheel through the vents in my ZF bellhousing, and they look bigger than the .25" pitch of a 168 tooth, but I can't get anything in there to measure. Do the ZF manual and Allison flexplate use the same pitch?

Thanks!
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Old 01-17-2004, 09:23 AM
CPMac632 CPMac632 is offline
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All Duramax use the same pitch and it is considerably different than the old 168 tooth.
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  #8  
Old 01-19-2004, 06:37 AM
Kennedy
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I tried to find a ring gear for my forklift and was disappointed too when I learned they were no longer avail. Then again it has a Hercules flathead 4 and hasn't been built for over half a century whereas the Dmax/ZF is still in production...


Dunno what the long term drivetrain durability, and comfort implications are with going solid, but the dual mass is definitely keeping me from buying one...
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Old 01-21-2004, 02:20 PM
GMCTRUCK GMCTRUCK is offline
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While going over parts list with the local dealer I was told that the new replacement flywheel for my truck has a different part # than what the 01-03s came with. Anyone elso heard this?
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