From the archives: Legendary tech guru Marlan Davis explains why the 9-inch Ford is the strongest rearend out there—it’s all due to “hypoid distance.” To celebrate HOT ROD's 75th anniversary, we ...

So if simple math wasn't your thing in school, then narrowing a Ford 9-inch at home might not be the job for you. But if you're the type of hot rodder who likes a challenge, then this old-school ...

There are many reasons to run a high-pinion differential in a 4WD vehicle, and there are many reasons to run a Ford 9-inch axle. When used in the front of a vehicle, high-pinion differentials ...