Ford has used "'open" diffs, Detroit Lockers, and several types of clutch-type limited-slip ('posi') units. Tom favors a properly prepared posi for most street/strip applications. The best Ford ...

In the hardcore wheeling world, maximum traction at any cost is the order of the day and lighter-duty options are often forgotten. The cost-effective answer for many on the low-adrenaline side of ...

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 ...