AAR rear axle question

[Todd Puzey]

Was there a difference between a regular 1970 8 3/4” rear out of a cuda or a challenger, and an AAR rear axle?

 

[Vaanth]

Was there a difference between a regular 1970 8 3/4” rear out of a cuda or a challenger, and an AAR rear axle?

The 8-3/4" rear axle itself was the same in AAR 'Cuda and Challenger T/A vehicles as other E-body applications. The standard rear axle ratio in the AAR 'Cuda and Challenger T/A was 3.55:1, with 3.91:1 as an option. AAR 'Cuda and Challenger T/A also had 11"x2.5" drum brakes standard on their 8-3/4" rear axle.