Driveshaft splines

[Garagefull]

The 6-inch lift has the factory driveshaft all the way at the end of the splines (stretched to the maximum length). So with the shackles being at the rear of the leaf spring, I assume that I should measure to split the spline travel to be in the middle?with the shackle being in the rear is going to shorten the drive shaft under compression, and I can't see having the old truck completely off the ground..or should I go a little deeper than halfway four more contact area under normal conditions? I guess my line of thinking comes where the the driveshaft will get shorter under compression, whereas my m715 with a shackle upfront would get longer.

 

[Chaski]

The 6-inch lift has the factory driveshaft all the way at the end of the splines (stretched to the maximum length). So with the shackles being at the rear of the leaf spring, I assume that I should measure to split the spline travel to be in the middle?with the shackle being in the rear is going to shorten the drive shaft under compression, and I can't see having the old truck completely off the ground..or should I go a little deeper than halfway four more contact area under normal conditions? I guess my line of thinking comes where the the driveshaft will get shorter under compression, whereas my m715 with a shackle upfront would get longer.

I'd talk to the driveshaft shop you are using for measuring instructions. Also, there are extended slip setups available. The geometry gets pretty funky with that much lift, you can have such a difference in length from full droop to full compression that you may end up needing an extended slip setup, and possibly a high angle CV to avoid binding at the transfer case. Practice opening your wallet now to be ready!

 

[cucvrus]

Check out CUCV Hot rodding and Modification. They are into that stuff over there.

 

[doghead]

Moved to correct forum.