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 ...

A license plate frame that made the rounds a few years ago said: "Watch my rear end, not hers!" Hot rodders could take a cue from that bit of whimsy when it comes to performance third members. While ...

It was 1973, the last time we saw a brand-new 12-bolt rearend in a passenger car, and man, the things are fetching untouchable green at today's swap meets. Some have argued that GM's 12-bolt axle has ...

It's built strong, lasts long, and hooks the tires so hard it's just plain wrong. This is a fair description of Detroit Locker's new Detroit Truetrac locking differential. Whether it's an 8.5-inch ...

Engine size/modifications/horsepower/torque: L78 396c.i./375 horsepower/Chevy 12 bolt posi rear with 3:55 gears Upgrades/modifications: Compression ratio 9.6:1, Eagle ...