CK5
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69' K20 Rear Axle (Solid)

Probably an eaton HO52 or HO72 full floater..does it have a removeable center section (like a ford 9")? Thats usually a dead giveaway that its an eaton rear.
 
Depends on engine.
a 350 truck would have 4.11's stock
a 250, 292, 307 truck would have 4.57's stock

Of course they could be ordered optionally.
The third gear ratio from the factory was 5.14, but these are usually under one ton's.
 
Along with the Eaton possibility, it could also be a Dana 60.

This is the Eaton:

Eaton.jpg




This is the Dana 60:

Dana60Rear.jpg


:D :D
 
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