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545 Posts
Ok I have a 4" block below the f350 stock rear block for my rear lift, Since I installed this I have had a take off shudder, but no problems at highway speed.
The block is a 5* taper, tilting the front of the diff up, I also installed a pro comp carrier bearing drop (2pc drive shaft) I have played around with the shims for the carrier bearing drop and was only able to get a 2* difference between the pinion and driveshaft (pinion @ 10*, ds @ 12*) but I was still getting the shudder so I got a 3* shim pack and installed that now I have a 5* difference between pinion and driveshaft but still have the shudder, I haven't had a chance to play with all the shim combo's yet but I wanted to know if anyone had suggestions on what angle the pinion and ds should be at to eliminate shudder on take off?
Or is the pinion just raising so much that it can't be controlled without traction bars?
I'm not really interested in the adjustable carrier bearing drop brackets at the moment because I can simulate that with all the shim combo's without spending $150, and it's not a bolt in solution you still have to know where to align it to eliminate the shudder.
The block is a 5* taper, tilting the front of the diff up, I also installed a pro comp carrier bearing drop (2pc drive shaft) I have played around with the shims for the carrier bearing drop and was only able to get a 2* difference between the pinion and driveshaft (pinion @ 10*, ds @ 12*) but I was still getting the shudder so I got a 3* shim pack and installed that now I have a 5* difference between pinion and driveshaft but still have the shudder, I haven't had a chance to play with all the shim combo's yet but I wanted to know if anyone had suggestions on what angle the pinion and ds should be at to eliminate shudder on take off?
Or is the pinion just raising so much that it can't be controlled without traction bars?
I'm not really interested in the adjustable carrier bearing drop brackets at the moment because I can simulate that with all the shim combo's without spending $150, and it's not a bolt in solution you still have to know where to align it to eliminate the shudder.