1998 Nissan 240SX Base
Transmission gear ratios, final drive data, and drivetrain specs for the 1998 Nissan 240SX Base.
US specification / S14
Nissan press specifications preserved by NICOclub. The source explicitly leaves maximum engine speed unspecified. AT values retain the source rounding; do not assume an RPM limit from peak power.
Sources & engine identity
- Nissan 1998 240SX specificationsgear ratios, reverse, final drive, tires
Engine designation KA24DE linked to ACES base vehicle 6632 via SEMA Data / FRSport. ACES identifies fitment; the factory references supply gearing and RPM.
Factory gearbox options
Stock manual / 5-speed / final drive 4.083
- Gear 1
- 3.321
- Gear 2
- 1.902
- Gear 3
- 1.308
- Gear 4
- 1.000
- Gear 5
- 0.759
- Reverse
- 3.657
Stock automatic / 4-speed / final drive 4.08
- Gear 1
- 2.790
- Gear 2
- 1.550
- Gear 3
- 1.000
- Gear 4
- 0.690
- Reverse
- 2.270
Default transmission ratios
| Gear | Ratio | Overall | Step |
|---|---|---|---|
| 1 | 3.321 | 13.560 | - |
| 2 | 1.902 | 7.766 | 1.746 |
| 3 | 1.308 | 5.341 | 1.454 |
| 4 | 1.000 | 4.083 | 1.308 |
| 5 | 0.759 | 3.099 | 1.318 |
| R | 3.657 | 14.932 | - |
Overall = gear ratio × final drive. Step = previous ratio ÷ current ratio.
Final Drive: 4.083Overall Spread: 4.375