DrKSGT Posted September 12, 2012 Report Share Posted September 12, 2012 I have installed the Shelby Billet Lower Control Arms and relocation brackets with lowers in middle set of holes. My driveashaft is still production two piece. When I install the Shelby upper with a new Shelby upper bracket, where should I set the pinion angle? Or does some one have what they set theirs to that has worked well? Find it interesting the American Muscle in video states -2 degrees. Measuring per instructions at front of the driveshaft abd then at pinion seems awkward to resolve you are moving relationship of the axle to the suspension points. Appreciate any quick comments as tomorrow night will be the upper control arm install, DrKSGT Link to comment Share on other sites More sharing options...
zachman Posted September 15, 2012 Report Share Posted September 15, 2012 Look on s197 forums. 2005, 4.6, tech, have you adjusted your Pinion angle "sticky". I believe -2 at trans. and +2 at rearend =0 for a one piece driveshaft. There is also info on two piece driveshaft. Link to comment Share on other sites More sharing options...
bnoslo Posted September 15, 2012 Report Share Posted September 15, 2012 According to the ford shop manual, the pinion angle, at the differential flange, should be 1.1 degrees, and that is pointing downward, not sure if that is negative or positive. Driveshaft angle spec is 3.9 degrees. I know from my experience as a tech, you never want a u-joint angle to exceed 4 degrees, between the 2 components on the joint, to keep smooth operation. Most important, never never have a 0 degree angle across a u-joint or c/v style joint, it won't do anything but vibrate and destroy the joint. Link to comment Share on other sites More sharing options...
GT500THUNDER Posted September 15, 2012 Report Share Posted September 15, 2012 If you set the pinion angle at 2 degrees you will be fine. You can go lower with stiffer bushings, if you have softer bushings you can go higher to 3 degrees. I am curious about why you are using the relocation brackets. Have you lowered the car, and need to get the LCA back to level? Link to comment Share on other sites More sharing options...
DrKSGT Posted September 15, 2012 Author Report Share Posted September 15, 2012 If you set the pinion angle at 2 degrees you will be fine. You can go lower with stiffer bushings, if you have softer bushings you can go higher to 3 degrees. I am curious about why you are using the relocation brackets. Have you lowered the car, and need to get the LCA back to level? I put the relocation brackets on because my SGT came lowered 1.5" from Shelby. Purpose was to get car to more normal production angle on the LCA. Figuring it would help some strange axle activity I have had. Picked the center hole in the bracket to be conservative to move +1 or -1 for control arm adjustment with the Shelby billet arms. I did get my angle to the 2 degree difference and moan I was having at 70 mph seems less. Still have to put the rear seat back in so I do not have that road noise influencing my assessment. Suspension does feel tighter but that could be all the bushings being new. Do notice a little lash type clunk in driveline when doing light accelerate/decelerate action on the gas pedal. Not sure I need to still tweak the angle a bit. Thanks to others that commented above about procedure. Forums were not as much help as most in discussions were talking about single piece axle I don't have yet. DrKSGT Link to comment Share on other sites More sharing options...
GT500THUNDER Posted September 15, 2012 Report Share Posted September 15, 2012 I have a similiar clunk. Some thing I have read about, so I was concerned. When I did my LCA and UCA I checked all the bolt sizes etc. The only thing I may go back over is change out some bolts so the threaded part does not end up on the body bolt holes. I am not too worried about the noise, as much as the wear potential on the holes. My next mod will be to lower the car and then I will have to put on the LCA relocation brackets. Link to comment Share on other sites More sharing options...
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