C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

ZF-6 question

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Old Aug 11, 2002 | 10:22 PM
  #1  
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From: Rockwall TX
Default ZF-6 question

I just recently had my zf 6 rebuilt and my new motor makes about 450 hp. Well the first couple of days it wasnt that loud and now its getting to the point it sound like i have a supercharger can anyone help
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Old Aug 11, 2002 | 11:25 PM
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From: Austin TX
Default Re: ZF-6 question (Kehrer923)

where did you have your ZF rebuilt? (and have you called them about the whine?).
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Old Aug 12, 2002 | 12:29 AM
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Default Re: ZF-6 question (danno85)

I sent it to ZF industries 1500$!!!!! :mad
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Old Aug 12, 2002 | 12:36 AM
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Default Re: ZF-6 question (Kehrer923)

Its also a pain it the butt to get in reverse
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Old Aug 12, 2002 | 04:27 AM
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Default Re: ZF-6 question (Kehrer923)

I know you put oil in it. Right?
actually that dollar figure doesn't sound too bad for the ZF.
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Old Aug 12, 2002 | 11:09 PM
  #6  
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Default Re: ZF-6 question (89 Paul in Cal)

yea i fillem with the GM stuff, maybe a I will switch to some synthetics like pro blend or royal purple
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Old Aug 13, 2002 | 12:53 AM
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Default Re: ZF-6 question (Kehrer923)

I think you should have it looked by Zf idustries before you
do anymore damage to the trans.The parts are very expensive.
As far as the car not engaging in reverse/or having A hard time
engaging,that could be A reverse syncro. :mad :chevy
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Old Aug 13, 2002 | 11:36 AM
  #8  
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Default Re: ZF-6 question (BERTZR1)

Call ZF! You should not have a whine.
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Old Aug 15, 2002 | 07:42 PM
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Default Re: ZF-6 question (Vette92)

Ok heres how its acting shifts perfect and whines as it revs up, when in neutral not moving it has a squeking noise, but whne you push the clutch in it sounds normal. :rolleyes:
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Old Aug 16, 2002 | 09:54 AM
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Default Re: ZF-6 question (Kehrer923)

With the clutch out in neutral, the input shaft and intermediate shaft spin and the output shaft sits idle. With the clutch in, the transmission parts do not move so it would (should) be silent. If you described the noise in each gear 1 thru 6, I could provide some better insight into what componentry is bad.

Sounds like a bearing, bearing surface or shaft problem. My advice is...quickly tear it out and send it back to get warranty service. Make sure it has the right lube in it so they don't void warranty on return.

P.S.: You installed the pilot bearing on reassembly....right???


[Modified by Rick93Z07, 8:56 AM 8/16/2002]
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