Exar-Kun wrote:well, it IS the Torque(twist) that breaks things, but if the full amount of torque is never applied(via feathering the clutch, slippage of tires, etc) in a shock-loading manner you may never break anything. the problem arises when you apply 500lb/ft in a usdden shock load and nothing gives to reduce the shock loading on the rear end....
just a minor correction
-chet
Yes, of course torque is what breaks things.
But Remember the Rear end is behind the transmission, which modifies the Torque (and speed) of the motor's output to suit vehicle speed. in first gear even on a wimpy KA there is over 2000 LB/FT of torque at the wheels (over 500 at the drive shaft)
On a pimped out SR (or KA :icesangel)that could become over 5000 LB/FT!!! in first gear. But there is a limit to traction. Lets say in a 2500 LB car the point traction breaks on heated slicks is around 5000 LB/FT with a wheel diameter of 1.8 FT. if the rear end can handle more then that, then it would be near impossible(very difficult) to break it, Because you are breaking traction before your breaking the rear end. But the transmission is a different story.