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Differential/axle info [message #343319] Tue, 14 May 2019 22:16
sandy trout is currently offline  sandy trout   United States
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Registered: October 2018
Location: texas
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78 GMC Royale 26 foot left side bath/separate shower

What is the GM model designation of the third member(10 Bolt) and what is the spline count where the shafts enter the differential?
I believe the gear ratio is 307, and the fluid is suppose to be 75/80.

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