1968 Tempest/GTO Speedometer Gear Usage Chart (Turbo 400) | |||||||||||||||
Speedo Driven Gear | Tire Size | Speedometer Adapter | |||||||||||||
Rear axle ratio | Part No. | Teeth | Color | G70 X 14 | 8.25 X 14 | 205R X 14 | 7.75 X 14 | G77 X 14 | Model | Ratio | Part No. | Color | Sleeve & seal assy. | Trans code | Drive gear teeth |
2.56 | 9780628 | 35 | PINK | X | X | X | 1362294 | PT | 18 | ||||||
2.78 | 1359272 | 38 | BLUE | X | X | 1362294 | PT | 18 | |||||||
2.78 | 1359271 | 37 | RED | X | 1362294 | PT | 18 | ||||||||
2.93 | 9780628 | 35 | PINK | X | X | X | 1362294 | XP | 16 | ||||||
2.93 | 1362048 | 40 | BLACK | X | X | 1362293 | PT | 18 | |||||||
2.93 | 1359273 | 39 | BROWN | X | 1362294 | PT | 18 | ||||||||
3.23 | 1359273 | 39 | BROWN | X | X | 1362294 | PX | 16 | |||||||
3.23 | 1359272 | 38 | BLUE | X | 1362294 | PX | 16 | ||||||||
3.23 | 9780470 | 44 | DK GREY | X | X | 1362293 | PT | 18 | |||||||
3.23 | 1362196 | 43 | PURPLE | X | 1362293 | PT | 18 | ||||||||
3.36 | 1362195 | 41 | YELLOW | X | X | 1362293 | PX | 16 | |||||||
3.36 | 1362048 | 40 | BLACK | X | 1362293 | PX | 16 | ||||||||
3.55 | 1362196 | 43 | PURPLE | X | X | 1362293 | PX | 16 | |||||||
3.55 | 1362049 | 42 | GREEN | X | 1362293 | PX | 16 | ||||||||
3.90 | 1362195 | 41 | YELLOW | X | X | 777-S | .8653 | 535617 | BLUE | 1362293 | PX | 16 | |||
3.90 | 1359270 | 36 | WHITE | X | 777-S | .7692 | 535615 | YELLOW | 1362294 | PX | 16 | ||||
4.33 | 1362195 | 41 | YELLOW | X | X | 777-S | .7692 | 535615 | YELLOW | 1362293 | PQ-PX | 16 | |||
4.33 | 1362048 | 40 | BLACK | X | 777-S | .7692 | 535615 | YELLOW | 1362293 | PQ-PX | 16 | ||||
Information supplied by George Pearson, taken from a Pontiac Parts Book | |||||||||||||||