G15 rear diff

[crpntr78]

Howdy all, Just got a 1984 GMC K2500 8600 GVW.. RPO's are hard to read. Gives a G15 code for the rearend. It's a 14 bolt semi float.What ratio would this be? Thanks

 

[Keith Seymore]

Howdy all, Just got a 1984 GMC K2500 8600 GVW.. RPO's are hard to read. Gives a G15 code for the rearend. It's a 14 bolt semi float.What ratio would this be? Thanks

I'm not familiar with G15.

https://www.gmheritagecenter.com/do...its/Chevrolet-Trucks/1984-Chevrolet-Truck.pdf

Could it be GT5 (=4.10:1)?

K

 

[crpntr78]

Very well could be GT5, I actually debated with my self as to whether it was a 1 or a T. Thank you very much.