Reference Details
- Availability
- factory
- Limited-slip
- Yes
- Notes
- Over-Drive lists 3.90:1 for all 400 Ram Air II/IV transmissions; axle-code and Safe-T-Track proof remains car-specific.
- Ratio
- 3.90:1
- Type
- rear axle
Chassis reference
3.90:1 rear axle context for 400 Ram Air II/IV Firebirds
rear axle · factory
Cars With This Chassis Detail
1 linked car page.
1969 Pontiac
1969 Pontiac Firebird 400 Ram Air IV
Regular Firebird 400 Ram Air IV path; separate from the WS4 Trans Am package.