The Stovebolt Site Forums The Parking Lot Tons 'o Fun anyone change out their 5.17:1 diff gears?

I found a set of 4:11 s and switched out my 5:14s in my GMC 1 ton firetruck. WHAT A DIFFERENCE!. Not as good going up hills, buy what a pleasure to drive. The previous comment, 68-72 H072, out of a 3/4 tom Chev/GMV is what I found. Locally, expect to pay 500 bucks if some shop can locate one. My truck is stock with the 228, 6 cyl. I found mine here on the For Sale forum and bought up! Good luck