Recently bought an 83' K5 custom. First fishing trip dropped off in a hole and didnt have what i needed to get out, so there I sat for about 30 min. Problem is, that not knowing I got salt water in the rear diff; I drove 45 min back home. Now Im getting to rebuild or replace the rear diff. because the seals were old and just didnt hold up. Does anyone have any recomendation on seals that will be best for down here on the coast, and making sure I dont get to buy another differntial due to salt water. I changed fluid and tried to clean out the old the best I could, but the damage was done.
Its the chevy 10 bolt, not sure of my gear ratio till I tear into her tomorow.

 

So after pulling thecover off, my front bearing went, and ate up the pinion and ring gear. The ratio, 15 teeth on the pinion, 41 teeth on the ring gear, came out to 2.73. I dont know if this is what I need to look for to put back in it, or if I should look for 3.73? Any info is helpful.