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bad u joints kill 0-60 time

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Old Oct 4, 2009 | 10:32 AM
  #1  
88fastgta's Avatar
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From: Raleigh, NC
Car: 1988 Flame Red Trans am GTA
Engine: Forged 355 4 Bolt, FIRST TPI
Transmission: 700r4
Axle/Gears: ls1 torsen 3.42 gear
bad u joints kill 0-60 time

this is probably a silly question but

i know i have bad u-joints and im going to replace them next week but i was wondering can that reduce your 0-60 times or kill your take off the reason im asking is because it just doesnt seem to reach 0-60 as quick now the u-joints are bad.... thanks in advance...
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Old Oct 4, 2009 | 12:20 PM
  #2  
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From: Central NJ
Car: 86 Trans Am
Engine: 408 stroker sbc
Transmission: TKO600
Axle/Gears: Moser full floater m9, 3:70 trutrac
Re: bad u joints kill 0-60 time

if they are that bad, i would not even consider racing the car, its a fail waiting to happen.

They will definitely affect your 60, when they break, the car will stop.
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Old Oct 4, 2009 | 12:23 PM
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From: Raleigh, NC
Car: 1988 Flame Red Trans am GTA
Engine: Forged 355 4 Bolt, FIRST TPI
Transmission: 700r4
Axle/Gears: ls1 torsen 3.42 gear
Re: bad u joints kill 0-60 time

yeah they have been bad for a while now...i dont know how bad they are but every single time im coasting to a stop i hear this clank and metal sound and when at a stop when im putting it in gear you also hear the metal clanking sound... its very annoying.. i know its the u joints.. i have neapco brute forces now and will put them on next week... but since then my 0 to 60 has taken a huge dip... because when i accelerate hard i get this nasty vibration underneath.. i still have the stock u joints on there... they are probably low on grease and being 21 plus years old its time for new stronger ones.... its not the tranny mount because i checked it and its fine....

Last edited by 88fastgta; Oct 4, 2009 at 12:28 PM.
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Old Oct 5, 2009 | 01:24 AM
  #4  
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Re: bad u joints kill 0-60 time

Originally Posted by 88fastgta
...every single time im coasting to a stop i hear this clank and metal sound and when at a stop when im putting it in gear you also hear the metal clanking sound...
Are you sure? I have never heard of u-joints doing that. Are you sure your torque arm bolts are tight? That's the only other thing I can think of that would make that noise in that situation.
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Old Oct 5, 2009 | 08:48 AM
  #5  
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From: Raleigh, NC
Car: 1988 Flame Red Trans am GTA
Engine: Forged 355 4 Bolt, FIRST TPI
Transmission: 700r4
Axle/Gears: ls1 torsen 3.42 gear
Re: bad u joints kill 0-60 time

could be..... i already purchased my torque arm with a bmr unit anyway and got a bmr torque arm relocation crossmember to get the torque arm off the tailshaft and onto the crossmemberand install the new u joints all at the same time... so whatever it is im sure it will be gone within a week anyway after i install everything...
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Old Oct 5, 2009 | 09:23 AM
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From: Lincolnton, NC
Car: 88 IROC
Engine: 97 5.7 Vortec LT4 hotcam
Transmission: 700 r4
Axle/Gears: 3.73
Re: bad u joints kill 0-60 time

either way man, stop driving it and fix it before something happens
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Old Oct 5, 2009 | 01:07 PM
  #7  
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From: Raleigh, NC
Car: 1988 Flame Red Trans am GTA
Engine: Forged 355 4 Bolt, FIRST TPI
Transmission: 700r4
Axle/Gears: ls1 torsen 3.42 gear
Re: bad u joints kill 0-60 time

i wish i could but sadly this is my daily driver... im going to baby it and will only have a week to put up with it until i install the parts... i've been driving it like this for at least two or three months...
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Old Oct 7, 2009 | 08:54 AM
  #8  
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Re: bad u joints kill 0-60 time

Originally Posted by 88fastgta
could be..... i already purchased my torque arm with a bmr unit anyway and got a bmr torque arm relocation crossmember to get the torque arm off the tailshaft and onto the crossmemberand install the new u joints all at the same time... so whatever it is im sure it will be gone within a week anyway after i install everything...
Thanks for using our products for your project

If you have any questions or concerns during the install let me know I will be glad to help
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