Ahhh, interesting. You are having the transfer case input shaft changed out. We did not go that direction on the 8HP75. We did a custom intermediate shaft that adapts the output shaft on the 8HP75 to the input shaft design on the A343F. The weak point is the A343F Output Shaft design. We had to change to a superalloy for the intermediate shaft design, as the FEA on the shaft showed some weak points and we wanted a 1.5 safety factor. This would be a stronger way to go, but does require the transfer case to be torn down and built back up. This was a fork in the development where we went the other direction. Thanks for sharing. I will post pictures of the 3D models once I get clearance from DomiWorks. I do not want to share his IP before he is ready.All the pieces required, not including nuts, bolts, gaskets etc.
1 torque converter to flex plate adapter.
1 engine to trans adapter
1 trans to transfer case adapter
1 transfer case input shaft made to fit 6R80 output
View attachment 3536265