Spicer 24 Question
Generally speaking the Spicer 24 is a fairly good box. Gears seldom fail, they are comparable to the 205 but that is where the strength in the 24 ends. The 24 does not have bearings to support a lot of torque. All but the input bearing are the same as you would find in a pinto 3 speed. The front shaft is sometimes prone to excessive wear on the slider splines. If you use it with a high torque diesel I would recommend you replace the weak standard 207 bearings with the high torque bearings. They are very easy to replace but can cost a little unless you find a good deal. The 207L from BCA or timken are El-Cheapo stock bearings that will not survive more than 50,000 miles with a 240 6 banger.