A-Body Shackle Angle

justinp61 said

Crackedback is right about measuring with weight on the axle. If everything is else is in the factory location a factory length shaft should be fine. I moved the rear end back 1/2" on my Dart and ran a factory length shaft with no problems.

As far as the rear end moving back and forth in reality it's very little if any unless the front segment wraps up. As the spring (rear segments) load and flatten out it makes the rear half longer and moves the shackle back.

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Ok thanks Justin,
I have a Dana 60, and it would be interesting to know the difference if any, between the 8 3/4 and the Dana 60 if you measure axle centerline to pinion yoke j-unit centerline?
When I refer to the 44.8" drive shaft, is a figure I got from the SS Hemi Guide of Jim Schild. In it, it says the four-speed Barracudas should have this 44.8" shaft, but this is about 4" to short, which make me think I need the 48.6" Drive Shaft also mention, but used with the Dart´s. This doesn´t make sense, since these bodies are different in wheel base.
Any way I need a 48.6" some Drive Shaft...