Reference Details
- Availability
- factory
- Limited-slip
- Yes
- Notes
- Mercury's September 15, 1966 AMA sheet for the 390-4V GT specifies semi-floating axle shafts, a straddle-mounted pinion, a three-plate friction-clutch Equalock, 2.25-inch pinion offset, four differential pinions, and a 9-inch ring gear. Pinion and bearing adjustment use shims, wheel bearings are single-row double-sealed ball bearings, capacity is five pints, and lubricant is M-2C57-A at SAE 90 for summer, winter, and extreme cold.
- Ratio
- 3.25:1 with 12/39 teeth; 3.00:1 with 13/39 teeth
- Type
- rear axle
