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What differential in my 96 Collectors edition 6 speed?

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What differential in my 96 Collectors edition 6 speed?

 
Old 07-09-2019, 03:22 PM
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jerryg01
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Default What differential in my 96 Collectors edition 6 speed?

I have a 96 C4 Collectors Edition Coupe, LT4 with the ZF6 Transmission. Can anyone tell me what the Differential is or how I can find out? The SPI codes on the tag give a GM3 code, which I think is a 3:45 gear, but I don't know the differential ID. Dana 36 or what? Help is appreciated, Think I'm gonna have to remove it and install new pinion bearings. Anyone ever done that?
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Old 07-09-2019, 03:32 PM
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WVZR-1
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If stock still, it's a D44 and is a 3.45. Your '96 pinion uses a 'crush-collar' for pre-load vs shims.
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Old 07-12-2019, 08:59 AM
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KyleF
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Originally Posted by WVZR-1 View Post
If stock still, it's a D44 and is a 3.45. Your '96 pinion uses a 'crush-collar' for pre-load vs shims.
This is correct. How many miles are on your car? The D44 behind a stock LT4 should be all but indestructible. Very rare to see someone report a problem. Are you stock? What makes you think you need new bearings?

Last edited by KyleF; 07-12-2019 at 08:59 AM.
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Old 07-12-2019, 03:46 PM
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I'm getting a whine in the rear end when I accelerate, noticeable mostly above 45-50 mph. 52,000+ miles on the car. No noise upon deceleration.
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Old 07-12-2019, 03:48 PM
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And I have recently changed the fluid, using the proper lubricant, plus the anti slip additive.
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