75gmck25
Full Access Member
- Joined
- Oct 13, 2016
- Posts
- 2,304
- Reaction score
- 2,272
- Location
- Northern Virginia
- First Name
- Bruce
- Truck Year
- 1975
- Truck Model
- K25 Camper Special TH350 NP203
- Engine Size
- 5.7
If you plan to change gears, check the specs carefully to make sure what will work with your current axle. Some axles have two different carrier assemblies, usually one for low gears (maybe 3.73, 4.10, 4.56) and one for higher gearing (2.73, 3.07, etc.).