1974 Dart Sport 489 Differential Question

74 318 should have been 8.25

Yes...^^^^^....Never seen a 74' A body with a 8.75. And a ratio in that range would have been a 3.21 with a 8.25. It would be interesting though if it was by chance a dealer installed rear? Just be glad you have what you have.....You're $$$ ahead of the game. :thumbrig: