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My M6 Synchronizers

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Old Dec 29, 2001 | 11:33 AM
  #1  
Jared H's Avatar
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Default My M6 Synchronizers

... Second gear is grinding 90% of the time when I shift above 3500rpms ... 3rd and 4th are still okay. I have about 46,000 miles on the car. It's a little disappointing that they didn't last longer.

Anyways, I have three questions. The first is ... anyone have a reccomendation for a reliable shop to replace my synchronizers in the Houston or Austin area at a reasonable rate? I'm probably going to avoid dealerships at this time.

Second question is a two part question ... how difficult is it to do the job yourself and is there a T56 service manual readily available showing how to do it? I'm relatively mechanically inclinded and don't mind doing the work myself as long as I feel I have a handle on how to do it.

Third question is ... are there any aftermarket synchronizers of better quality available for the T56 that will last a bit longer?

Thanks for the help ... Jared H.
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Old Dec 29, 2001 | 11:35 AM
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Default Re: My M6 Synchronizers

Yea, do not take it to a dealership...all they will want to do is replace the trans...they won't bother to fix it if its a syncro, they will just order a new one...you could pick up a manual, but the trans seems kind of complicated...rebuilds can be up to $1500 bucks or higher... <img src="gr_eek2.gif" border="0">

I do not think there are any aftermarket syncros out yet...the only aftermarket thing that was released lately was the steel shift fork... <img src="gr_stretch.gif" border="0">

Good Luck
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Old Dec 29, 2001 | 11:40 AM
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Default Re: My M6 Synchronizers

Call Westech ask for Norm they can re-build, shim and blueprint your tranny w/ upgraded Viper synchs only thing is this place is in Wisconsin!!

262-889-4346 ask for Norm
<img src="gr_stretch.gif" border="0">
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Old Dec 29, 2001 | 03:31 PM
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Default Re: My M6 Synchronizers

BigBos ... thanks for the info ... If it comes down to it, I may swap the tranny out myself for a GM certified rebuilt T56 with a 3yr/36000mi warranty ... and in that case ~$1500 doesn't sound that bad.

Racer88 ... I may do that if I can't find something locally ... thx for the info on the viper sychros ... why are they better?

Anybody else? TIA JHH
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Old Dec 30, 2001 | 01:15 AM
  #5  
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Default Re: My M6 Synchronizers

Jared, the Viper parts are strenghtened. But a re-built T56 is not that bad...I believe you can get one from Tremec direct for around $1300.00

Good luck on your tranny, and keep in mind that guy Norm at Westech is nice enough to even sell you the parts and give good information.....

He recommends drilling the slave (drill mod)....I would find out more about that. My boyfriend did the drill mod and has had no problems w/ his re-built tranny so far.......LOL

<img src="gr_stretch.gif" border="0">
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Old Dec 30, 2001 | 01:10 PM
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Default Re: My M6 Synchronizers

If anyone wants my tranny its for sale in the classifieds...

Its going for 700 and the only thing wrong with it is a bent 3-4 shifter fork which which was on TSB report..
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Old Dec 31, 2001 | 12:19 AM
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Default Re: My M6 Synchronizers

Found an online service manual for the T56 if anyone is interested ... www.spicer.com.mx/tremec/catalogo/consulting.html

Racer88 ... thanks for the info ... I'll probably give him a call and see what the cost would be to upgrade the synchros as well as get the lower first, second, and third gears that the Z06 is getting ... might be cost prohibative ... won't know until I call ... thx again.

No recommendations on local Austin or Houston area shops to do this yet ... anybody?
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