Author Topic: 1978 k10 308 rear differential  (Read 1710 times)

Offline 2tone4by

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1978 k10 308 rear differential
« on: March 17, 2019, 02:42:04 PM »
I pulled cover to change oil and have notice a spring sticking out back there. I donít know if it is supposed to be like that or what . Glove box tag say it a g-80. Can any one shoot me an image of the rear end with plate removed or a diagram of the thing taken apart  thanks

Offline Irish_Alley

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Re: 1978 k10 308 rear differential
« Reply #1 on: March 17, 2019, 10:14:32 PM »
take a picture and post it
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Offline 75gmck25

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Re: 1978 k10 308 rear differential
« Reply #2 on: March 18, 2019, 01:11:15 PM »
The G80 GovLock differential is the basic limited slip option from GM.  It locks when there is significant difference in RPM from one wheel to the other (one is slipping).  The problem is that if you spin it up too quickly (burnout or stuck in snow, etc.) the engagement of the locking mechanism can break parts internally during a sudden engagement. Due to that issue, some performance guys nicknamed it the GovBomb differential. 

There are several YouTube videos for the GovLock, so maybe one will be helpful for you.