Which rearend is better? GM’s time-proven 12-bolt or Ford’s popular 9-inch. Each has its advantages and disadvantages. The Ford 9-inch is heavier and eats up more power due to a disadvantage in pinion ...

Installation of a ring and pinion gear set is not a job for an amateur, especially if that ring and pinion set is going to see high-performance usage, such as drag racing. Setting up such gears is a ...