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Posted by Tim Holloway on Saturday, February 16, 2008 at 00:08:49 :
In Reply to: Denman Overdrive Install posted by Dave Hibberd on Friday, February 15, 2008 at 20:49:02 :
Dave,
I dont know about the rear pulley, but I will tell you of a modification I did on my Dennan. The kit includes a universal joint that mounts the overdrive directly to the back of the transfer case. As it is a single u-joint, the OD must be installed PERFECTLY in line with the transfer case. Otherwise the joint will wear out in a hurry. Assuming you get it installed perfectly sitting in your shop, the relationship will change as the truck moves, twists, flexes etc. I got 2 more M-37 flanges and bolted them back to back and added a second u-joint, in effect making a very short driveshaft. I realised quickly that I needed to add additional support to prevent twisting but once that was done it ha worked flawlessly. I would strongly reccomend installing it this way.
Tim