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Old 06-13-2010, 10:27 AM   #1
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still necessary?

If i install a 3.5 inch suspension lift, will a CV shaft and SYE still be needed, or is that only once you hit 4 inches of lift? Thanks in advance.

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Old 06-13-2010, 10:51 AM   #2
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its different for every jeep, but usually around three inches of lift people start getting driveline vibrations. Some of those have been solved by transfer case drops and motor mount lifts. An sye and cv drive shaft will make sure theres no problem though.

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Old 06-13-2010, 03:26 PM   #3
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Possibly it will be needed. You will need to put the lift on and see if it will need it or not.
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Old 06-14-2010, 01:17 AM   #4
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ok thanks for the answers guys
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Old 06-14-2010, 02:08 AM   #5
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I had a slight vibration even after a 2.25" Budget boost. A motor mount lift cured the problem. I'm pretty sure you will need it, or a pretty big transfer case mount drop (which kind of defetes the purpose of lifting it). But, like stated above, every Jeep is different. Don't forget, you will also need rear upper adj. control arms with your SYE and driveshaft.
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Old 06-15-2010, 10:53 AM   #6
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im running 4.25" suspension 2" body (not that it matters in this case), 35's, all i have is a TC drop and brown dog 1" MML no vibes and my U-Joints havent snapped or worn away. it all depends on the jeep there all different you can have one like mine with no vibes of you can get a wrangler with a 2" BB and it will get vibes.

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