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grinding 3rd gear?

This is a discussion on grinding 3rd gear? within the Firebird / WS6 forums, part of the Vehicle Specific category; When I shift at lower RPMs, right around 1500 to 1900 RPMs, i grind going into 3rd gear and only ...

  1. #1
    Sarge for AAG Emperor hutch1999's Avatar
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    1998 Trans Am m6

    grinding 3rd gear?

    When I shift at lower RPMs, right around 1500 to 1900 RPMs, i grind going into 3rd gear and only 3rd gear. I dont really know why because when I shift at higher RPMs it shifts just fine with no grinding. Right now for a quick fix I just make sure to shift over 2000 RPM into 3rd. Any info on what this could be would be helpful. I do have a Pro 5.0 shifter if that makes a difference.

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    pewter
    2001 z28 lingenfelter 383

    very likely syncros...very commen problem as ive read on here..my 99z28 used to do it all the time in 3rd and 5th and somtimes 6th.....i got used to skipping 3rd and 5th unless i was racing .....can either get it fixed or just try not to let it bother u

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    Member chieftransam's Avatar
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    2001 Pontiac Trans Am M6

    yeah man i had that problem except mine was grinding in 3rd and 4th. It was my syncros, and as soon as i got it fixed it, there was no more grinding! But I also went ahead and replaced my clutch kit.

  4. #4
    Sarge for AAG Emperor hutch1999's Avatar
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    how much money are we talkin when replacing the syncros? and will it hurt anything if i just let it go

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    Sponsor autotrix's Avatar
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    Replacing your syncros can be very expensive! The money it would take to have your trans torn down for just one part could allow for a new manual swap!

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  6. #6
    Sarge for AAG Emperor hutch1999's Avatar
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    sounds like i just need to try to live with it

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    1998 Ws6 Trans Am M6

    Interesting, my car seems to be developing the same problem.

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    Only seems to do it when I shift fast, if I shift a bit slower it doesnt seem to do it.

  9. #9
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    I would recommend just living with it. Might as well drive it till it breaks.

    I would like to point out that our transmissions 2nd and 3rd gear are not designed to be used unless during hard acceleration. If you read your manual it actually states this.

    I only use 2nd and 3rd when I'm on it. 1st-4th-5/6th all the time. Of course sometimes there is no way around putting it in 2nd around a corner or something,

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    Rollo Tomassee AKIRA's Avatar
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    Quote Originally Posted by gnomee View Post
    I would recommend just living with it. Might as well drive it till it breaks.

    I would like to point out that our transmissions 2nd and 3rd gear are not designed to be used unless during hard acceleration. If you read your manual it actually states this.

    I only use 2nd and 3rd when I'm on it. 1st-4th-5/6th all the time. Of course sometimes there is no way around putting it in 2nd around a corner or something,
    And its ridiculous. Why make a MANUAL TRANSMISSION when it is built to use like an auto? I dont know if they half-assed the 2nd and 3rd gears because of gas saving lovers, but if they did, what a couple of bums....

  11. #11
    Detailing + Design third_shift|studios's Avatar
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    gnomee; site your source? that sounds retarded. Skip shift is only there for emissions purposes.

    The t56 in 98-2000 models is made with weaker, carbon synchronizers. The 01+ models have brass synchs. [I found this out from tremec, the transmission manufacturer]. it should cost roughly 1500 to rebuild with better shift forks and brass synchs.

    Also, the 98-00's have shitty clutch/hydrolic systems. I bet your slave cylinder isn't doing it's job therefor your getting the grind. I suggest replacing the slave when you get a new clutch.

    yes, if you granny-shift 3rd @ such low rpms, yer gonna grind, the mating and timing is all out of wack and the synch's just can't do their job; hence the reason it feels more solid at 2k and above. You might benefit from a fluid flush and fill in your tranny.

    Good luck.
    Last edited by third_shift|studios; 12-28-2006 at 10:16 PM.


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    Thanks for the tips.

  13. #13
    Sarge for AAG Emperor hutch1999's Avatar
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    Quote Originally Posted by third_shift|studios View Post
    gnomee; site your source? that sounds retarded. Skip shift is only there for emissions purposes.

    The t56 in 98-2000 models is made with weaker, carbon synchronizers. The 01+ models have brass synchs. [I found this out from tremec, the transmission manufacturer]. it should cost roughly 1500 to rebuild with better shift forks and brass synchs.

    Also, the 98-00's have shitty clutch/hydrolic systems. I bet your slave cylinder isn't doing it's job therefor your getting the grind. I suggest replacing the slave when you get a new clutch.

    yes, if you granny-shift 3rd @ such low rpms, yer gonna grind, the mating and timing is all out of wack and the synch's just can't do their job; hence the reason it feels more solid at 2k and above. You might benefit from a fluid flush and fill in your tranny.

    Good luck.
    thnx for the info. My slave cylinder was replaced by the car dealership right before i bought the car 5,000 miles ago because someone had test drove it and messed it up so i think it should be fine for awhile. I dont drop the clutch much at all. The only time i would cause any real wear would be the last two races ive been in and thats it. I dont do any burnouts anymore I got that out of my system with 93 A4 formula.

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    Detailing + Design third_shift|studios's Avatar
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    then i suggest not granny shifting anymore, melba toast

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    Sarge for AAG Emperor hutch1999's Avatar
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    06 HD Softail
    1998 Trans Am m6

    Ive been having to granny shift for the last couple of weeks because apperently im public enemy #1 in my lil town. Somethin about how i drive What makes me mad is the fact that the cops are NOT catching me its this stupid crime stoppers thing in my town where people call the cops to "stop crime" and get "rewards". Im in the city's police computer several times for ''noise'' complaints and "speeding" complaints even tho Ive NEVER been pulled over by a city police officer. How shitty is my town to pay people to do the cops jobs? AND I dont speed in the downtown area, its on the outskirts of the city limits that connect to the county roads which have a speed limit of 55. Small towns are a joke, we need some real crime I guess.

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    Senior Member INMY01TA's Avatar
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    Downshifting or upshifting?

  17. #17
    Sarge for AAG Emperor hutch1999's Avatar
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    06 HD Softail
    1998 Trans Am m6

    upshifting

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    Yeah, upshifting.

    God fifth is being such a bitch.

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    Quote Originally Posted by third_shift|studios View Post
    gnomee; site your source? that sounds retarded. Skip shift is only there for emissions purposes.

    The t56 in 98-2000 models is made with weaker, carbon synchronizers. The 01+ models have brass synchs. [I found this out from tremec, the transmission manufacturer]. it should cost roughly 1500 to rebuild with better shift forks and brass synchs.

    I did site my source. The Manual. Page 2-38 to be exact. I also said nothing about skip shift.

    There is no reason to bash me and call my statment retarded. Especially when you are wrong. You could have maturely disagreed.

    Your statement about the weaker carbon synchros is exactly what not designed for means. They made them weaker and only intended you to use them when racing and to stick with 1st - 4th for daily driving since they engineered it around having skip shift make you shift that way.

    I agree that they should have spent the extra change and made it a beefy tranny.

  20. #20
    Detailing + Design third_shift|studios's Avatar
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    i think they tried to save a buck and put in shotty materials; like sarge says "bean counters" make the decisions. i didn't see that you had sited it. sorry man. good arguement in all honesty

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