Eaton Posi - GM 8.875 12-Bolt 30-Spline

The Eaton Posi - GM 8.875 12-Bolt 30-Spline differential is a performance-oriented limited-slip unit designed for street and strip applications where locked-axle traction meets daily drivability. Built for GM's popular 8.875-inch 12-bolt housing, this differential is ideal for enthusiasts upgrading older Camaros, Firebirds, and light-duty trucks seeking improved cornering control and acceleration without the harshness of a full spool or the maintenance demands of a locking locker.

When factory open differentials allow one wheel to slip during hard acceleration or tight cornering, the Eaton Posi bridges that gap by automatically biasing torque to the wheel with grip, keeping power on the ground where it matters. The Eaton Posi uses a cam-and-ramp clutch pack design that provides smooth engagement and predictable torque bias without the jarring lockup of mechanical lockers. The 30-spline design ensures robust axle compatibility with modern performance shafts and supports higher horsepower builds while maintaining OEM bolt patterns for seamless installation into existing 8.875 housings.

This differential benefits drag racers and street enthusiasts alike by enhancing traction and control, making it a valuable upgrade for those looking to maximize performance. Its durable construction and reliable operation ensure that it can withstand the demands of both daily driving and competitive racing. With the Eaton Posi, drivers can experience improved acceleration and cornering without sacrificing drivability.