I brought up the argument in another post that an axle being full floating doesn't add a whole lot to the torque that the shafts can sustain. This is from my own engineering knowledge (I am a senior engineering student) and things I have picked up from Pirate (not necessarily correct). No one argued with me and I was kinda surprised because it seems everyone thinks that FF axles add tons of strength over SF. That argument said, I do run 1 tons under my Blazer so I realize that a FF 14 bolt is probably a little stronger than a 10 bolt . So, using real logic and strength of materials knowledge, lets hear some arguments for either side. Don't post up "I switched to a FF and I quit breaking shafts" or "everyone always says ...". Real tech with real facts to back it up. Let's hear it.