Results 1 to 12 of 12

M6 first gear question

This is a discussion on M6 first gear question within the Manual Transmission forums, part of the Drivetrain category; Sometimes when i'm stuck in heavy traffic, i'll just leave my ws.6 in 1st and either let it idle or ...

  1. #1
    Detailing + Design third_shift|studios's Avatar
    Join Date
    Aug 2005
    Location
    Pittsburgh, PA
    Age
    36
    Posts
    21,719

    My life is a
    Ben Stiller movie.

    M6 first gear question

    Sometimes when i'm stuck in heavy traffic, i'll just leave my ws.6 in 1st and either let it idle or i'll gently accelerate. Well, i've found that if i accelerate then let go [say @ 2000 rpm's] when it goes to about 1500 there is this "bottoming out" feeling i get almost as if it were an automatic doing a downshift...

    something tells me this is normal, b/c i've felt it with big dump trucks too

  2. #2
    Detailing + Design third_shift|studios's Avatar
    Join Date
    Aug 2005
    Location
    Pittsburgh, PA
    Age
    36
    Posts
    21,719

    My life is a
    Ben Stiller movie.

    bump

  3. #3
    Member Fran D's Avatar
    Join Date
    Aug 2005
    Location
    Washington Crossing, PA
    Posts
    131
    Is this a question? I'm not sure I understand what you are describing.

  4. #4
    Detailing + Design third_shift|studios's Avatar
    Join Date
    Aug 2005
    Location
    Pittsburgh, PA
    Age
    36
    Posts
    21,719

    My life is a
    Ben Stiller movie.

    bah...sorry. the question is; what is the "bottoming out" feeling the car does when it's in first and idles down from 2000 rpms?

  5. #5
    Heavy Set Thin Guy t/as&dds's Avatar
    Join Date
    Aug 2005
    Location
    MA
    Age
    42
    Posts
    165

    Quicksilver Metallic
    2005 Pontiac GTO

    It's probably the rear end clunking from the sudden change in motion. First you're giving it gobs of power by getting it to 2 grand then you're letting off and letting engine braking take over. I noticed that same thing.

  6. #6
    Junior Member
    Join Date
    Jul 2005
    Location
    Philadelphia, PA
    Age
    53
    Posts
    33

    Black
    2000 SS

    Actually what i think you are feeling is the computer shutting down the fuel system. I beleive it does that when you are in gear at a low rpm with out the throttle being open.

  7. #7
    Detailing + Design third_shift|studios's Avatar
    Join Date
    Aug 2005
    Location
    Pittsburgh, PA
    Age
    36
    Posts
    21,719

    My life is a
    Ben Stiller movie.

    Quote Originally Posted by t/as&dds
    It's probably the rear end clunking from the sudden change in motion. First you're giving it gobs of power by getting it to 2 grand then you're letting off and letting engine braking take over. I noticed that same thing.
    that sounds about right...next time it happens i'll try to take notice if it's from the rear or not..

  8. #8
    We'll be back... GatorSS's Avatar
    Join Date
    Aug 2005
    Location
    THE SWAMP
    Posts
    1,446

    Light Pewter Metallic
    2000 Camaro SS M6

    It's the rear end and it's normal.

  9. #9
    Old user ButchN's Avatar
    Join Date
    Jul 2005
    Location
    MA
    Posts
    67

    Black
    2013 Coupe

    Quote Originally Posted by GatorSS
    It's the rear end and it's normal.
    Never heard of that & my car doesn't do it.

  10. #10
    Member
    Join Date
    Nov 2005
    Location
    Liberty MO
    Posts
    100

    Black
    1995 Firebird

    It just has to do with physics. Considering your motor is directly linked to your rear tires.. and since you are in 1st gear (with a 2.97-1) ratio, everything your motor does will be maximized by your rear tires. As the motor is downshifting, you will feel it the rear tires slow down also (obviously) and it will seem as if you hit the brakes. Its just because the 1st gear ration is so high.. if you do the same thing in 2nd or 3rd you wont feel it nearly as much.

  11. #11
    Junior Member
    Join Date
    Nov 2005
    Location
    Austin, TX
    Posts
    12

    Navy Blue Metallic
    2002 Camaro SS

    He's talking about the idle-down characteristics of the LS1. Once at rpm, say ... 1500 or more, it tends to stay at that rpm until the manifold pressure hits a point that says "we're deceleratting," and then it shuts the fuel down to idle level.

    So, basically, if you accelerate and then back off, you'll travel some distance and will "coast" for some distance before you get much effective "engine braking." If you are on a road course, forget engine braking and use the brakes. The LS1's engine braking is almost non-existant until well after you already expected it ... until you drive it for awhile. Then, it's normal ...

    Is that what you're asking about?

  12. #12
    SUPREME member-oderator oneBADDz's Avatar
    Join Date
    Nov 2005
    Location
    Lost in Texas
    Age
    34
    Posts
    2,683

    Custom Slate Blue
    99 B4C

    I know exactly what you mean, my '97 does it too and it has nothing to do with fuel systems etc. It's just the point where the whole drivetrain makes the transition from pulling to being pulled. All of your gears are pulled tight against each other when you accelerate, and when you let off and decellerate they lose contact then pull tight against each other in the opposite direction as the drivetrain is being pulled by the car rather than the drivetrain pulling the car

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. gear oil question
    By kevk77 in forum Drivetrain
    Replies: 13
    Last Post: 04-06-2010, 02:47 PM
  2. 3.73 gear question
    By Justin23454 in forum Drivetrain
    Replies: 11
    Last Post: 03-14-2008, 12:21 PM
  3. 3.73 gear question
    By therobman in forum Firebird / WS6
    Replies: 4
    Last Post: 12-20-2006, 12:41 PM
  4. Gear Question
    By rbrack in forum Drivetrain
    Replies: 7
    Last Post: 10-06-2006, 07:39 AM
  5. Gear question
    By TheAntiRice in forum Drivetrain
    Replies: 1
    Last Post: 12-28-2005, 10:20 AM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •