I was just reading at ring-pinion.com that when you lift a truck it changes the angles in of the u-joints and when you go to a lower gear ratio it causes vibration due to the driveshaft spinning at higher rpm. Has anyone experianced this with a 4" susp. lift? I am especially worried about the angles in my '92 2wd f-150 because it has 2 smaller driveshafts that connect to the body in the middle. This means that when i lift it the rear driveshaft will have a really steep angle on it.

 

You simply rotate the input side of the axles up -- and tip the engine/transmission down. There are many articles on the subject -- and the angles are critical to component life and driver comfort.

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Y2K™ Jim - N8JG@Hotmail.com

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