Eaton Posi limited-slip | GM 8.2 Rear (55P 3rd Member) 1955-1964 Chevy Car | 17 Spline Axles | 3.90 & Down

The Eaton Posi limited-slip differential is the perfect way to control traction in street rods, light duty pickups and all types of tarmac running race cars.

Specs

Part Number: 19686-010

Traction Type: Eaton Posi limited-slip

Carrier Break: 3.90 & Down

Differential: GM 8.2 Rear (55P 3rd Member)

Vehicle Fitment

• 1958 – 1964        Chevrolet             Impala
• 1958 – 1964        Chevrolet             Biscayne
• 1955 – 1964        Chevrolet             Bel Air
• 1955 – 1961         Chevrolet             Nomad
• 1955 – 1964        Chevrolet             Corvette
• 1964                    Chevrolet             Malibu

Download EATON Application Guide PDF

Operation

The Posi prevents wheel slip before it can get started. Racebred carbon disc clutch packs, preloaded by a central spring assembly, are located behind each differential side gear. When torque input changes (one wheel slips), the clamping load on the clutch packs increases, causing them to smoothly transfer power to the other wheel as needed.

Performance

The Eaton Posi is smooth and automatic, requiring no driver input. Featuring pyrolytic carbon clutches and a rebuildable design, the Posi can be custom tuned for your desired performance.

Lubrication

A quality, petroleum-mineral based, GL5 rated 80w-90 gear oil should be used. It is necessary to add a four-ounce bottle of friction modifier for optimum performance (if friction modifier has not already been added to the petroleum-mineral based gear oil).

Features

• Superior rebuildable design
• Race-bred carbon friction discs
• Limited-slip operation
• Smooth and automatic engagement – no driver action needed
• Tunable via various spring packs (a.k.a. pre-loads)