| 1969 Firebird Speedometer Gear Usage Chart (Turbo 400) | ||||||||||||
| Speedo Driven Gear | Tire Size | Speedometer adapter | ||||||||||
| Rear axle ratio | Part No. | Teeth | Color | E70 X 14 | F70 X 14 | 7.75 X 14 | F78 X 14 | Part No. | Color | Sleeve & seal assy. | Trans code | Drive gear teeth |
| 2.56 | 1359270 | 36 | WHITE | X | X | 1362294 | PV | 18 | ||||
| 2.56 | 9780628 | 35 | PINK | X | 1362294 | PV | 18 | |||||
| 2.78 | 1359272 | 38 | BLUE | X | 1362294 | PV | 18 | |||||
| 2.78 | 9780628 | 35 | PINK | X | 1362294 | PX | 16 | |||||
| 2.78 | 1359273 | 39 | BROWN | X | X | 1362294 | PV | 18 | ||||
| 3.08 | 1359272 | 38 | BLUE | X | 1362294 | PX | 16 | |||||
| 3.08 | 1362196 | 43 | PURPLE | X | X | 1362293 | PV | 18 | ||||
| 3.08 | 1362049 | 42 | GREEN | X | 1362293 | PV | 18 | |||||
| 3.23 | 1362048 | 40 | BLACK | X | 1362293 | PX/PQ | 16 | |||||
| 3.55 | 9780470 | 44 | DK BLUE | X | X | 1362293 | PX/PQ/PS | 16 | ||||
| 3.55 | 1362196 | 43 | PURPLE | X | 1362293 | PS | 16 | |||||
| 3.90 | 1362049 | 42 | GREEN | X | 9775436 | BLUE | 1362293 | PX/PQ/PZ | 16 | |||
| Information supplied by George Pearson, taken from a Pontiac Parts Book | ||||||||||||