Rear end ratio

[Kdancy]

Refresh my memory please -- if the ring has 43 and the pinion has 13, you divide 43 by 13 = 3.307 = 3:31 ratio ?

53commander HDTP
53 Champion HDTP
61 Cursed Purple Hawk
64 Champ long bed V8
64 GT

[JDP]

Correct.

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64 R2 4 speed Challenger
63 R2 4 speed GT Hawk
63 Avanti
54 3R Pickup