GMT 900 Trucks General Discussion 2007 - 2013 Trucks | General Discussion

driveshaft problems on nnbs

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Old Oct 25, 2010 | 11:14 PM
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Default driveshaft problems on nnbs

hey guys, ive read around on here and it seems a few guys are having problems with there drive shaft twisting and shredding once past 100 or so, i see it mainly on 4 doors but a few on single cabs, i'll be getting a single cab and just wondering if theres a solution for the single cab nnbs trucks for this to not happen? thanks
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Old Oct 25, 2010 | 11:36 PM
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I have gone over 120 mph a few times and never had a problem but now you scared me . Next time I will think about it twice.
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Old Oct 25, 2010 | 11:56 PM
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haha my bad man, but my buddy (jg53) and my brother both have 4 doors with mods and theres vibrate once reaching 100 plus.. and ive read about a white single cab on here that has had driveshaft problems also.. just trying to get info on a reliable way to go
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Old Oct 26, 2010 | 12:08 AM
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It vibrates from 100 to like 110 but after that it stops. One time I asked a chevy dealer mechanic why they did that and he said that were not built to go over 100 mph
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Old Oct 26, 2010 | 01:52 AM
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ive been 140mph with mine and it never broke.
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Old Oct 26, 2010 | 02:16 AM
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That mechanic is right, they are not meant to go over 100mph. Any higher than that is all luck. These are bottom of the bin aluminum driveshafts; they can be bandaided with a good balance, but they'll never be a quality piece. You won't see as many issues with a RCSB driveshaft since its shorter, but you're still at the mercy of a part that is primarily designed with cost effectiveness in mind.
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Old Oct 26, 2010 | 01:31 PM
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Yeah your right their not rated for speeds over 100. I drive a nnbs single cab and i have had this issue twice over speeds of a 100 first one snaped in half the second twisted and snaped as well, messed up my differencial. Finally decided to replace the aluminum driveshaft to a steel been holding up good since over speeds of 120.
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Old Oct 26, 2010 | 01:34 PM
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I'm having mine custom built right now, rated to at least 150mph. Should be finished this week, will update in the projects thread in a few days...
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Old Oct 26, 2010 | 02:31 PM
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Are the drive shafts in the 2500s better? I know there not aluminum.
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Old Oct 26, 2010 | 04:44 PM
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so basically im best off by getting one made? looks to be luck of the draw by some driveshafts twisting and some handling 120mph plus... thanks for the info guys
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