Kef

Just install a 2 piece drive shaft. Then you don’t have to worry about exceeding it’s critical speed (other failures notwithstanding).

If you believe the critical speed calculations the limiters are set based on the driveshafts. Test drove 2 different z71s and 3 2wd trucks. First 2 did 112. Other 3 all 99. Calculate the critical speed and you’ll see in the 2wd 4 door trucks, the one piece 75” shaft will jump rope at about 110-115. I’m going to get a 2 piece because I do not trust the stock 5” .080 aluminum foil shaft.

I decided to play and pay too. Took the speed limiter off, pulled to 110 like a beast then BOOM I had a 3 piece drive shaft. No mods other than speed limiter off. At dealer now hopefully won’t be too bad. Got lucky didn’t see any other damage and nothing leaking. Center piece shown. Other ends are still attached to truck.