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-   GMT 900 Trucks General Discussion (https://www.performancetrucks.net/forums/gmt-900-trucks-general-discussion-188/)
-   -   driveshaft problems on nnbs (https://www.performancetrucks.net/forums/gmt-900-trucks-general-discussion-188/driveshaft-problems-nnbs-471318/)

03 True Fire 10-25-2010 11:14 PM

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

08cheyennesc 10-25-2010 11:36 PM

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.

03 True Fire 10-25-2010 11:56 PM

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

08cheyennesc 10-26-2010 12:08 AM

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

Daryn 10-26-2010 01:52 AM

ive been 140mph with mine and it never broke.

smokeshow 10-26-2010 02:16 AM

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.

6.slow 10-26-2010 01:31 PM

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.

smokeshow 10-26-2010 01:34 PM

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...

Bow-Tie-Beast 10-26-2010 02:31 PM

Are the drive shafts in the 2500s better? I know there not aluminum.

03 True Fire 10-26-2010 04:44 PM

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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