The Eaton Posi is a clutch-type limited-slip differential built around race-bred carbon friction discs in a fully rebuildable housing. Net-forged internal gears add strength, and the clutch preload can be tuned by swapping spring packs so bias suits the application. It operates automatically and smoothly and is backed by service kits for discs, shims, and springs. This unit is configured for the GM 8.5in cast-iron 3rd member axle.
- Type: Clutch-type limited-slip (Eaton Posi)
- Axle: GM 8.5in cast-iron 3rd member
- Ring gear diameter: 8.5in
- Spline count: 17-spline
- Gear ratio: 3.08 to 3.90
- Rebuildable: Yes, preload tunable with Eaton Posi service kits
- Part number: 19670-010
Vehicle Applications
- 1963-1979 Chevrolet Corvette
FAQ
What does the Eaton Posi do?
It is a clutch-type limited-slip using carbon friction discs in a rebuildable housing, with tunable preload.
Which axle and spline count does part number 19670-010 fit?
It fits the GM 8.5in cast-iron 3rd member axle, 17-spline, 8.5in ring gear, 3.08 to 3.90. Confirm your axle and spline count before ordering.
Can the Eaton Posi be rebuilt?
Yes. It is fully rebuildable, and preload can be tuned by swapping spring packs using Eaton Posi service kits.
Does it need a friction modifier?
As a clutch-type limited-slip, it uses a friction-modifier gear oil additive per Eaton's guidance.
