Flea C60 ratio table
Flea's FuelTech FT550 gear-detection setup uses a 4.53 differential value and six forward ratios. The values below match the car's saved FTManager setup. Toyota C60 versions and final drives differ by market, so verify your own gearbox before copying them.
| Gear | Ratio | Flea use |
|---|---|---|
| 1st | 3.17 | Launch |
| 2nd | 2.05 | Early acceleration |
| 3rd | 1.48 | Middle of pass |
| 4th | 1.17 | Quarter-mile finish gear target |
| 5th | 0.92 | Overdrive |
| 6th | 0.73 | Overdrive |
| Final drive | 4.529 | Flea baseline |
How to calculate RPM after a shift
The simple ratio method is useful before looking at a real datalog:
Using 8,500 rpm only as a math example, the calculated recovery points are:
| Shift | Current ratio | Next ratio | Approx. RPM after shift |
|---|---|---|---|
| 1 → 2 | 3.17 | 2.05 | 5,497 rpm |
| 2 → 3 | 2.05 | 1.48 | 6,137 rpm |
| 3 → 4 | 1.48 | 1.17 | 6,720 rpm |
| 4 → 5 | 1.17 | 0.92 | 6,684 rpm |
| 5 → 6 | 0.92 | 0.73 | 6,745 rpm |
Real recovery changes with clutch slip, tire growth, wheelspin, shift time and engine acceleration. Flea uses FuelTech logs to check the real trace.
Why C60 gearing matters on a 2ZZ
Keep the engine in its useful range
The 2ZZ makes its best race-car acceleration high in the rev range. Gear spacing decides where RPM lands after every shift.
Tire diameter changes effective gearing
Flea currently runs M&H 23x8-13 front slicks. A taller or shorter tire changes road speed at the same engine RPM.
Final drive multiplies every gear
Flea's 4.529 final drive makes the overall gearing shorter than a taller numerical final drive would.
Logs beat guesswork
FT550 gear detection, engine RPM and wheel speed show whether the car recovered cleanly after a real shift.