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high speed problem plz help

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Old Jul 8, 2010 | 01:09 AM
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Default high speed problem plz help
so my car drives smooth and all but when I get to like 130mph my shifter starts vibrating and can feel vibrating from shifter back to rear end I wanna know ways to keep everything stady even at 160mph so any things I should look for ? And y do you think it does that at high speed? My drivshaft is stock but I don't think that's the problem
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Old Jul 8, 2010 | 06:37 AM
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Originally Posted by atkinsson
so my car drives smooth and all but when I get to like 130mph my shifter starts vibrating and can feel vibrating from shifter back to rear end I wanna know ways to keep everything stady even at 160mph so any things I should look for ? And y do you think it does that at high speed? My drivshaft is stock but I don't think that's the problem

If your driveshaft is stock, that most likely is the problem. Beyond that, I'm not saying a thing. I'm assuming, maybe incorrectly, that you're trying to go that fast on a public road.....
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Old Jul 8, 2010 | 07:36 AM
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Originally Posted by atkinsson
so my car drives smooth and all but when I get to like 130mph my shifter starts vibrating and can feel vibrating from shifter back to rear end I wanna know ways to keep everything stady even at 160mph so any things I should look for ? And y do you think it does that at high speed? My drivshaft is stock but I don't think that's the problem
It's definitely your driveshaft. Most OE driveshafts are rarely smooth past 120mph. A larger diameter, well-balanced shaft will have a much higher critical speed and generate fewer harmonics...
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Old Jul 8, 2010 | 12:03 PM
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ya stock ds so ill replac it see if that works any drive shaft recomended tht will exceed top speed?
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Old Jul 8, 2010 | 01:38 PM
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Originally Posted by atkinsson
ya stock ds so ill replac it see if that works any drive shaft recomended tht will exceed top speed?
Try an aluminum shaft from Lingenfelter....
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Old Jul 8, 2010 | 02:12 PM
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okay the drive shaft I alredy got is aluminim but I'll give them a call see what's up and give them a call lingenfelter thankx
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Old Jul 8, 2010 | 02:37 PM
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Just because you have the stock aluminum DS doesnt mean you wouldnt benefit from a different aluminum DS that is designed for performance applications.
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Old Jul 8, 2010 | 03:14 PM
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Or try a Carbon Fiber one (supposedly the ultimate):
http://www.acpt.com/driveshaft/index.html

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Old Jul 8, 2010 | 07:38 PM
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you could also talk with PST (precision shaft technologies), i've heard great things about their products as well.
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Old Jul 8, 2010 | 09:15 PM
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how about your trans mount, OE or after market? if you need a new shaft you may like to talk to Bob
https://www.brutespeed.com/index.htm
good luck, Johnny
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