Mud in my Veins
Join Date: Dec 2000
Location: Memphis, TN
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As I've been saying[img]/wwwthreads_images/icons/laugh.gif[/img], yes; I think it's your transmission. The adjustment doesn't even require you to open the tranny - it's done on the side of the transmission using a torque wrench (which you can probably borrow free from the Zone). You clean the area around the screw, pull the locknut (they recommend replacing it), set the screw at 10 ft-lb, and (on the C3 & C6 only) back it off exactly 1 1/2 turns (C4 intermediate 1 3/4, low/reverse 3; C5 int 4 1/4, l/r 3). Then replace the locknut at about 38 ft-lb. Even if I'm wrong, doing this won't hurt or cost anything.
83 Custom w/95 4.9L EFI, 78 NP435, 83 NP208, 83 D44IFS 3.07, 87 Ford 8.8ABS 3.08, Michelin LTX AT 31x10.50R15