Pitching the stock differential out from under a GM car in favor of a 9-inch Ford has always been the best way to step up the drivetrain for drag racing. Since the price of used 12-bolts has ...

The Chevy 12-bolt axle shaft (left) is tapered; the Ford 9-inch shaft is the same diameter throughout its length, except for the short section just after the spline end. This makes it easy to narrow ...

Sooner or later, it boils down to what direction you're going to go when your Mustang's rear axle wears out. Some decisions are straightforward. If you have a six-cylinder Mustang, stick with the ...

Since its debut in 1957, the Ford 9-inch axle has earned a legendary status among racers, restorers, and hot rodders for its strength, adaptability, and ease of service. Even decades after Ford ...

The Ford 9-inch rear axle has earned legendary status among racers and builders for its strength, versatility, and ease of customization. From drag strips to off-road trails, it remains a go-to choice ...

I am building a Jeep Wrangler YJ with an eye towards survivability. So far I've swapped in a healthy Ford 351W V-8, an NP435 transmission, an NP205 transfer case, and a fabricated Ford 9-inch rear. I ...