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Message: <blockquote data-quote="RedVenom" data-source="post: 870221" data-attributes="member: 14997"><p>Out here in Sicily we get plenty of opportunities to hit some looooooong straightaways and see some top speed. I have a question about a certain vibration. Once I hit about 120mph and climbing, I start to feel a pulsating vibration and hear a hum from what feels like the driveline somewhere. Ive had this problem with the 4.10's as well as the 3.73's I just put in. What do you guys think could be? Anyone have this problem? If it is even the driveline....I was thinking maybe the driveshaft off balance or something to do with the trans itself. I dont know but it sure is P'n me off! :angry4:</p></blockquote><p></p>