# Eaton Posi Differential 17 Spline 3.08-3.90 Ring Gear Pinion Ratio Rear 8.5in

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. Featuring pyrolytic carbon clutches, rebuildable design, net-forged gears for added strength and seamless, automatic operation.

-   Tunable via various spring packs \[a.k.a. pre-loads\]
-   Pyrolytic Carbon Clutch Disc Technology
-   Clutch Type Limited Slip Differential
-   Smooth; Automatic Engagement
-   Precision-Forged Gears
-   Prevents Wheel Slip
-   Rebuildable

This Part Fits:

Year

Make

Model

Submodel

1963-1974,1977-1979

Chevrolet

Corvette

Base

1978

Chevrolet

Corvette

Indianapolis 500 Pace Car

1978

Chevrolet

Corvette

Silver Anniversary Edition

1975-1976

Chevrolet

Corvette

Stingray

## Details

- **Price:** 1247.03 CAD
- **Vendor:** Eaton
- **Type:** Differentials

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 1247.03 CAD | In stock |

## Images

- Photo - Primary
- Photo - Primary
- Photo - Primary
- Photo - Unmounted

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/eaton-posi-differential-17-spline-3-08-3-90-ring-gear-pinion-ratio-rear-8-5in)
> Updated: 2026-06-27