Page 1 of 2 12 LastLast
Results 1 to 20 of 21

rear axle I.d.

This is a discussion on rear axle I.d. within the Drivetrain forums, part of the LSx Technical Help Section category; Could someone please tell which digit on v.i.n. Is your rear axle?, and whatever digit it is, whats the ratio? ...

  1. #1
    Member
    Join Date
    Aug 2011
    Location
    pittsburgh,pa
    Posts
    114

    navy blue
    1998 camaro ss

    rear axle I.d.

    Could someone please tell which digit on v.i.n. Is your rear axle?, and whatever digit it is, whats the ratio? Thanks! Its a 98 camaro ss!

  2. #2
    None Shall Pass Knight's Avatar
    Join Date
    Jan 2010
    Location
    East of Cleveland, Ohio
    Posts
    3,828

    Black
    99 WS.6 - Modified

    There are RPO codes on the driver's door that give the code for the factory installed gear ratio -

    GU2 - 2.73 's Standard auto trans gear ratio. also note on the A4' s (auto's) shifter console if the gear selector for 1 is missing.

    GU3 - 3.08 's V6 gear ratio

    GU5 - 3.23 's Optional auto trans gear ratio

    GU6 - 3.42 's Standard manual trans gear ratio

    All came with the 7.5"/7.65" 10 bolt rear differential with 28 spline axles.

    Hope this helps.

  3. #3
    Member
    Join Date
    Aug 2011
    Location
    pittsburgh,pa
    Posts
    114

    navy blue
    1998 camaro ss

    Yes thanks a lot man!

  4. #4
    None Shall Pass Knight's Avatar
    Join Date
    Jan 2010
    Location
    East of Cleveland, Ohio
    Posts
    3,828

    Black
    99 WS.6 - Modified


  5. #5
    Senior Member TLS_Addict's Avatar
    Join Date
    Mar 2008
    Location
    PA
    Posts
    1,706

    Ray Charles blue
    1492

    Quote Originally Posted by Knight View Post
    There are RPO codes on the driver's door that give the code for the factory installed gear ratio -

    GU2 - 2.73 's Standard auto trans gear ratio. also note on the A4' s (auto's) shifter console if the gear selector for 1 is missing.
    My car is a GU2 code car and it has the gear selector for 1st gear. So is that a one year only deal or something?

    Also, if he is an SS with an A4 he has the GU5 3.23 code.

  6. #6
    None Shall Pass Knight's Avatar
    Join Date
    Jan 2010
    Location
    East of Cleveland, Ohio
    Posts
    3,828

    Black
    99 WS.6 - Modified

    Honestly, I just copied the codes from a database. I don't follow much with the auto trannys, as I don't have one. It's quite possible it was only done for one year, maybe even the earlier ones.

  7. #7
    Moderator 35th-ANV-SS's Avatar
    Join Date
    Oct 2008
    Location
    Wherever life takes me
    Posts
    12,465

    Red
    02 35th LE Camaro SS

    You can also jack the rear end up (securely) and crawl under the car and mark the drive-shaft with a marker. After you have the drive-shaft marked, turn the rear wheel (1) full revolution and watch/count how many times the drive-shaft turns.

    If the drive-shaft turns 3.5 times, you have a 3.42 rear end ratio. If the drive-shaft turns 3.25 times, you have a 3.23 ratio. If it turns 4X, you have a 4.10/4.11 ratio.

    You get the idea

  8. #8
    Senior Member TLS_Addict's Avatar
    Join Date
    Mar 2008
    Location
    PA
    Posts
    1,706

    Ray Charles blue
    1492

    If it spins and the wheels dont move it means you need a new rear. lol

  9. #9
    Your dealership guy konigandy6's Avatar
    Join Date
    Aug 2007
    Location
    Romeo, MI
    Posts
    6,557

    Velocity Yellow
    2008 Corvette Z06

    Quote Originally Posted by TLS_Addict View Post
    If it spins and the wheels dont move it means you need a new rear. lol


    Which is an inevitability with the 10 bolt.

  10. #10
    Senior Member TLS_Addict's Avatar
    Join Date
    Mar 2008
    Location
    PA
    Posts
    1,706

    Ray Charles blue
    1492

    Not if you dont drive it. lol I can hear it now "The 10-bolt in my 2002 Z28 was so weak I was in the garage looking and the car and thinking about drag racing and it broke!"

  11. #11
    Former Mopar Man 2002ssslp's Avatar
    Join Date
    Jun 2011
    Location
    Branchville, NJ
    Posts
    3,111

    Silver & Blue
    02 Camaro SS, 04 GTO

    Why did GM put such a small rear in the SS and WS6 ? How much more would it have cost to put in a 12 bolt ? I know I can get a Strange 12 bolt or 9" for less then 2k and it would have been much less for the for GM at the time of build. My 02 SS was almost 33k when new so what is another 800 bucks ?

  12. #12
    Moderator 35th-ANV-SS's Avatar
    Join Date
    Oct 2008
    Location
    Wherever life takes me
    Posts
    12,465

    Red
    02 35th LE Camaro SS

    Quote Originally Posted by 2002ssslp View Post
    Why did GM put such a small rear in the SS and WS6 ? How much more would it have cost to put in a 12 bolt ? I know I can get a Strange 12 bolt or 9" for less then 2k and it would have been much less for the for GM at the time of build. My 02 SS was almost 33k when new so what is another 800 bucks ?
    OEM 10 bolts replacements (refurbished) from a junk yard go for around $500. You can typically find them from first party sellers for between $150-$400.

    A new 12 bolt/9" is going to run anywhere between $2,500 to $3,500...depending on what options you get.

    If you can find one cheaper, I'd buy it personally.

  13. #13
    Super Moderator
    pajeff02's Avatar
    Join Date
    Feb 2009
    Location
    Mansfield, PA
    Posts
    21,567

    Black & Blue
    '02 WS.6 / '07 Suburban

    Moser 12 bolt with a True Trac, 33 spline axles, 4 channel, welded relocation brackets and sway bar brackets was $2,800 back in 2009.

  14. #14
    Moderator 35th-ANV-SS's Avatar
    Join Date
    Oct 2008
    Location
    Wherever life takes me
    Posts
    12,465

    Red
    02 35th LE Camaro SS

    My 9" was $2500 with the True Trac, 31 spline axles, 4 channel with ABS, and welded relocation brackets. I didn't get the sway bar brackets though. Probably should have, but the stock unit clears OK. I will get them when I get an aftermarket sway bar though.

  15. #15
    Former Mopar Man 2002ssslp's Avatar
    Join Date
    Jun 2011
    Location
    Branchville, NJ
    Posts
    3,111

    Silver & Blue
    02 Camaro SS, 04 GTO

    I still like the old Dana 60. Does anyone know if that chunk will fit the F-body platform ?

  16. #16
    Moderator 35th-ANV-SS's Avatar
    Join Date
    Oct 2008
    Location
    Wherever life takes me
    Posts
    12,465

    Red
    02 35th LE Camaro SS

    Pretty sure people here have it, but I don't know if it's a true bolt on like the other rear ends are. I know for certain that you have to get a new drive shaft with it because it needs to be about 1.5" shorter. It's also the heaviest and least efficienct of the 3. Unless you're going crazy HP wise, I think the 12 bolt or 9" works just fine.

  17. #17
    Super Moderator
    pajeff02's Avatar
    Join Date
    Feb 2009
    Location
    Mansfield, PA
    Posts
    21,567

    Black & Blue
    '02 WS.6 / '07 Suburban

    Strange has a lightweight version of the Dana called the "S60" that fits our cars. Comes in at around 20-25 lbs. heavier than a 12 bolt.

  18. #18
    Former Mopar Man 2002ssslp's Avatar
    Join Date
    Jun 2011
    Location
    Branchville, NJ
    Posts
    3,111

    Silver & Blue
    02 Camaro SS, 04 GTO

    Not going to go crazy HP but I do have heads and a cam in my future so I think I will stick with the GM theme and go with a 12 bolt which is what it should have had in the first place. I had Dana's in the past and never broke one even with a built Hemi engine and a 4 speed trans. You are right about the weight, HEAVY.

  19. #19
    Your dealership guy konigandy6's Avatar
    Join Date
    Aug 2007
    Location
    Romeo, MI
    Posts
    6,557

    Velocity Yellow
    2008 Corvette Z06

    Quote Originally Posted by 2002ssslp View Post
    Not going to go crazy HP but I do have heads and a cam in my future so I think I will stick with the GM theme and go with a 12 bolt which is what it should have had in the first place. I had Dana's in the past and never broke one even with a built Hemi engine and a 4 speed trans. You are right about the weight, HEAVY.
    A good rule of thumb to follow, is A4 go with a 12 bolt and M6 go with a 9". The 12 bolt is the most efficient rear out of them, but I have heard stories of them breaking in an M6 car because you can't pre-load the drivetrain when launching. The 9" is the indestructible answer since the carrier is free floating. Don't get me wrong, you can still rock a 12 bolt in an M6 car and it will be stronger than the 10. But like I said... I did a bit of research before I bought my axle and chose the 9".

    2008 Z06 - Velocity Yellow - OEM

    2017 Silverado Z71 5.3 - OEM

    2002 Z06 - Electron Blue Metallic - D1 - E85 - 701 rwhp 687 rwtq **sold**

    2002 Z28: M6 NBM - cam and boltons - 396rwhp 357 rwtq **sold**

  20. #20
    Former Mopar Man 2002ssslp's Avatar
    Join Date
    Jun 2011
    Location
    Branchville, NJ
    Posts
    3,111

    Silver & Blue
    02 Camaro SS, 04 GTO

    Thanks for the info. I think I may do the rear swap before I do the cam and heads.How about the setup. I currently have about 350rwhp since the car has just bolt ons and runs mid to high 12's @ 110'ish. Cam and heads should give me another 100hp so What should I do to the suspension to get it ready for the HP increase and the 9" rear. I have already put in the 1LE bars with poly bushings and bilstein shocks, I also have 3 pt. SFC.

Page 1 of 2 12 LastLast

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. rear axle need help
    By drago1217 in forum Drivetrain
    Replies: 6
    Last Post: 04-30-2010, 03:40 PM
  2. new rear axle
    By barryz in forum Manual Transmission
    Replies: 0
    Last Post: 07-25-2008, 11:48 AM
  3. SLP Rear axle
    By lude97 in forum Parts For Sale / Trade
    Replies: 16
    Last Post: 07-06-2007, 04:32 PM
  4. Rear Axle/Rear Grear Problem
    By ob02z28 in forum Manual Transmission
    Replies: 0
    Last Post: 01-22-2007, 11:32 AM
  5. 99 Rear Axle
    By speedkills in forum Parts For Sale / Trade
    Replies: 0
    Last Post: 01-12-2007, 07:10 PM

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
  •