New clutch type posi differential provides aggressive yet smooth traction, perfect for street and performance applications. These units are full rebuildable and use Eaton type internal components. 

We recommend using standard 80/90wt (non-synthetic) oil with Posi additive.


  • 4 Spring Clutch Style Posi Traction LSD
  • 4320 Forged Steel Internal Gears
  • Fully Rebuildable
  • Assembled in the USA 


stock photo


Application: 1965-1981 GM 8.875" Chevy Truck Rearend (12 bolt cover) (will not fit car)
  • 1965-1981 C10 Pickup
  • 1965-1981 K10 Pickup
  • 1965-1981 Blazer
  • 1965-1981 Suburban

Compatible Gear Ratios: 2.76-3.42 (3-Series)

Axle Splines: 30


Package Includes:

1- Posi Differential

2- Carrier Bearings & Races (Koyo)

1- Carrier Shim Kit

12- Ring Gear Bolts

1- Bottle Posi Additive








Shipping:  Most items ship within 24-48 hours of cleared payment. Please allow 2-10 business days for USPS shipping. 

Returns:    Returns on new, unused, clean, unopened merchandise are accepted up to 30 days from the purchase date.