A fundamental part of any muscle car is a nice, strong rearend fitted with a limited slip or Posi unit. What good is it to make gobs of horsepower if you can only do one wheel burnouts or if the diff ...

Forrest Gump’s philosophical words were on our mind the moment Mobile Diesel Service tech Matt Johnson removed the last bolt holding the dirt-and-rust-coated cover on our 26-year-old Ford Bronco’s ...

Before we get technical, let's talk a little about rearends. Yes, the one residing out back, underneath your old Mopar, which handles suspension duties and transfers the power delivered to the rear ...

Over the years, we thought we knew a few tricks about how to set up a typical Eaton 12-bolt, clutch-style limited slip, better known as a Posi. But we've learned a slick trick from Tom at Tom's ...

There might be a whining, grinding or growling noise coming from the rear of your car. The noise may be constant or only when accelerating or turning. And it could be so subtle that you forget it’s ...

Big milestone in the garage—I dropped my rear differential for the first time ever! 🤩 Whether you're maintaining your build, chasing drivetrain upgrades, or just diving into hands-on car repair, this ...