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

Pinion Nut Size

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Old Apr 18, 2002 | 10:45 PM
  #1  
tommelton's Avatar
tommelton
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From: Douglasville GA
Default Pinion Nut Size

96 Vette Dana 44, what is the size of the pinion nut? I measure 1.3" across the flats, and that appears to be a 33mm, but I cannot find such a beast. Anyone know what size it is really? The pinion seal is leaking and I need to replace it.

1 1/4" = 1.25
1 5/16" = 1.3125
33mm = 1.3

Thanks in advance...

Tom Melton
82 CE
86 Z51 Coupe
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Old Apr 18, 2002 | 11:26 PM
  #2  
Rich B.'s Avatar
Rich B.
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From: Lockport NY
Default Re: Pinion Nut Size (tommelton)

That's what I measure...I just got a new '86 Dana 44 nut & seal from Jeff Kopp...9422310 & 15583783...

My Sears socket set only goes to 30mm...Have to see what NAPA has...


[Modified by Rich B., 10:28 PM 4/18/2002]
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Old Apr 19, 2002 | 01:30 AM
  #3  
AquaMetallic94LT1's Avatar
AquaMetallic94LT1
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From: Hillsboro OR
Default Re: Pinion Nut Size (tommelton)

Its 1 5/16". You could use a sears 3/4" drive socket but the outer diameter of the socket is too big without grinding it. A 34 mm will work but its loose and will damage the nut if its removed with an impact gun. Harbor Freight has a 3/4 in drive set that has a socket that will fit. The set is 42 bucks.
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Old Apr 19, 2002 | 07:48 PM
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Rich B.'s Avatar
Rich B.
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From: Lockport NY
Default Re: Pinion Nut Size (AquaMetallic94LT1)

...1.300" = 1.312"??? :confused:

...Close enough!!!... :D

I only have a 1 5/16" impact socket (Cornwell); so I guess Sears stock will go up once again... :lol:
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