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just put dana 70s in my truck apperantly rear is an newer model from front (68vs 78) the yoke on the rear is massive my question is there are difference between the dana 60 yoke and the dana 70 yoke ? both from what I can tell from research have 29 splines . not looking forward to having driveline work done again .thanks

Ya, bigger trucks have bigger metal to handle bigger weight.
The transfer case is where the bigger/smaller yokes are interchangeable.

ok thank you not interchangeable , drive line modification it is .

Dana 60 and 70 will interchange yokes BUT 68 will have coarse splines and 78 will have the fine 29 spline.Many size yokes are available for your 29 spline diff.

digdoug wrote:Dana 60 and 70 will interchange yokes BUT 68 will have coarse splines and 78 will have the fine 29 spline.Many size yokes are available for your 29 spline diff.

Doug,
What is the cut off year for the coarse spline yokes for the Dana axles?
John

good news my drive line guy says there is a conversion u-joint for that application

Hobcobble wrote:

digdoug wrote:Dana 60 and 70 will interchange yokes BUT 68 will have coarse splines and 78 will have the fine 29 spline.Many size yokes are available for your 29 spline diff.

Doug,
What is the cut off year for the coarse spline yokes for the Dana axles?
John

For the most part, 68 is the cut-off, though in very few cases it can go to 70.

digdoug wrote: For the most part, 68 is the cut-off, though in very few cases it can go to 70.

Thanks for the ex spline ation

John