C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Need pinion and diff seal numbers........

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Old Jan 25, 2010 | 02:38 PM
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Default Need pinion and diff seal numbers........

I have a complete center section Dana 36 with 3:75 gears.Before I install it I want to replace pinion and differential seals.I dont know if they need to be done but figuere I might as well before install.The problem is parts store doesnt list them because they never came stock with 3:75's.Anybody know what the part numbers may be?thanks
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Old Jan 25, 2010 | 06:10 PM
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I don't think the gears matter. Go to GMpartsdirect and look up the year of the Dana 36. It should be on the housing. They will have them. Your local dealer will to or he can get them but as you know it's more that way.
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Old Jan 25, 2010 | 06:36 PM
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J&S gear in Huntington Beach will have them in stock....
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Old Jan 25, 2010 | 06:36 PM
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NAPA should have all the seal you need.
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Old Jan 25, 2010 | 08:03 PM
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So the gears dont matter then.When looking them up at store it listed gear ratios.Ok then good deal Ill just get the seals for a dana 36 thanks all
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Old Jan 25, 2010 | 09:30 PM
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NAPA is a good source but most any auto parts store can help you.The rear may NOT be ID'd as a D36 in the aftermarket catalogs so just use "automatic transmission" applications if it's NOT. The pinion seal will be easy to locate, the short axle seals maybe NOT but should be easily ordered for you!

Here's some GM/Dana references for you:

Short axle seals: GM 14079467 Dana/Spicer 706875X you need -2

Pinion seal: GM 10012635 Dana/Spicer 41455 you need -1

You could ask the auto parts store to cross reference those if you need.

You might want to consider a new pinion nut while there!
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Old Jan 26, 2010 | 09:28 AM
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Originally Posted by WVZR-1
NAPA is a good source but most any auto parts store can help you.The rear may NOT be ID'd as a D36 in the aftermarket catalogs so just use "automatic transmission" applications if it's NOT. The pinion seal will be easy to locate, the short axle seals maybe NOT but should be easily ordered for you!

Here's some GM/Dana references for you:

Short axle seals: GM 14079467 Dana/Spicer 706875X you need -2

Pinion seal: GM 10012635 Dana/Spicer 41455 you need -1

You could ask the auto parts store to cross reference those if you need.

You might want to consider a new pinion nut while there!
Ok having problems.The short axle numbers do not cross reference.The pinion crosses but to the smaller pinion sizes 2:59 thru 3:07.They list another for 3:45 thru3:54,none for 3:75This is a freind of mine at NAPA who is experienced.Just dont want to buy the wrong parts.Any suggestions?Thanks

Last edited by ks5shooter; Jan 26, 2010 at 02:22 PM.
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Old Jan 26, 2010 | 02:22 PM
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Ttt
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Old Jan 26, 2010 | 02:53 PM
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If the companion flange your using is a Dana 36 then this should fit:

National/Federal Mogul # 5778V . It is a Viton seal and will stand up much better.
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Old Jan 26, 2010 | 05:14 PM
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Ok, I dug through my box of receipts (believe me it's a lot of receipts) and found these numbers for you. I did my Dana 36 seals a while back. I got these from a local dealer.

(1) Pinion...........10112635 GM part number $31.54

(2) axle............. 14079467 GM part number $13.94 ea

Remember, 2 bottles of Limited Slip first then fill up with the gear oil.
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Old Jan 28, 2010 | 08:56 AM
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thanks all
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