[blown32]

Help! Can anyone help me find out the meaning of the casting numbers and axle code. I was told this came out of a 1969 C10 with 6 lug axles, but can't find any information to confirm this. Differential casting, GM54 and NF3896838. The axle reads TDA09 02W2.

 

[cfjfisher]

This may help http://www.sierragear.com/ http://coloradok5.com/
Welcome to C10 truck enjoy your stay

 

[cfjfisher]

here is another http://www.348-409.com/differential.html

 

[blown32]

Thanks for links, but still can't find anything that starts with NF that is on the differential. I think that 1970 was the first year with the 64" axle flange to axle flange. Any other links??

 

[Blue Goose]

maybe this will help
http://www.chevytalk.org/fusionbb/showtopic.php?tid/273921/

 

[Lokin4AReason]

http://www.hotrodders.com/forum/what-rear-end-do-i-have-206295.html

 

[Blue Goose]

see if this helps if unmolested I think TDA is the code
http://www.gmpartswiki.com/getpage?pageid=21083