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The 72 Challenger had 3 different gear ratios depending on the motor the car came with. If the car came with the 225 or 318 cu. in. motor it had 2.76 or 3.23 gears in the rear end. If it was a Rallye Car with the 340 cu.in. motor it had the 3.23 or 3.55 gears. The approximate ratio can be determined by marking both the a wheel and the driveshaft; turn the wheel one complete turn and the number of times the driveshaft rotates is the ratio of gears in the rear end.

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12y ago

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