Results 1 to 8 of 8

Which rear...8.8 or 9"???

This is a discussion on Which rear...8.8 or 9"??? within the Drivetrain forums, part of the LSx Technical Help Section category; Gonna be picking up a 01 WS6 next week and am already thinking about upgrading the rear before spring. I ...

  1. #1
    Junior Member
    Join Date
    Apr 2008
    Location
    KY
    Posts
    48

    Pewter
    2000 Z28

    Which rear...8.8 or 9"???

    Gonna be picking up a 01 WS6 next week and am already thinking about upgrading the rear before spring. I have a couple locally that are around $100 for the housings. Just wondering which everyone preffered to fab and why.

  2. #2
    Junior Member jmro's Avatar
    Join Date
    Jun 2009
    Location
    North Alabama
    Posts
    17

    nbm
    2002 Camaro Z28

    The 8.8 is the way to go if you are able to fab it up. there are guys that run them up to 1000hp. It has less power loss than a 9in, and will not cost a quarter of what a 9 will.

  3. #3
    Junior Member
    Join Date
    Apr 2008
    Location
    KY
    Posts
    48

    Pewter
    2000 Z28

    Good deal. I have owned several Mustangs in the past so the 8.8 is nothing new to me. I have done several gear swaps in them. Just wasn't sure what most people were going with in an F-Body.

  4. #4
    Junior Member
    Join Date
    Apr 2008
    Location
    KY
    Posts
    48

    Pewter
    2000 Z28

    Anyone have a good write-up on how to get the 8.8 fabbed to work in an F-Body?

  5. #5
    Moderator Firebirdjones's Avatar
    Join Date
    May 2006
    Location
    Arizona
    Posts
    12,552
    Much easier to drop a 9 inch in there. The 8.8 has no provision for a torque arm, and unless you want to delete the torque arm with a 4 link setup then the 9 inch is the way to go. Very simple to adapt. We were doing it to 3rd gens long before drop in housings were made.

    Once you have a 9 inch narrowed to the correct width it's as simple as calling Currie, they sell all the brackets as well as the torque arm bracket that easily adapts to the 9 inch. Much less headache and a cleaner install.

    There are those that try the 8.8 route, sometimes by brazing a torque arm to the cast iron center section, and some even go out of their way to adapt the 7.5 axle tubes into an 8.8 center section (which are different sizes by the way) and in my opinion just looks like a hack job. No need for that when the brackets are out there to be bought.

    It's up to you, but you'll need fab skills either way, the 9 inch requires less fab skills and is much simpler. If not, then a ready made drop in unit is the way to go.

  6. #6
    Junior Member
    Join Date
    Apr 2008
    Location
    KY
    Posts
    48

    Pewter
    2000 Z28

    Thanks for the response. I will definitely look into the 9" also. I am all about less fab work as I would like to be able to take it to the track this spring to get some numbers for it being a full exhaust car only, so I can do some comparison after the next round of mods.

  7. #7
    Moderator Cutlass's Avatar
    Join Date
    Apr 2008
    Location
    Madison, WI
    Posts
    6,998

    1999 Formula WS6 M6-sold
    2001 Silverado Z71

    Quote Originally Posted by slow46gt View Post
    Anyone have a good write-up on how to get the 8.8 fabbed to work in an F-Body?
    Here's the only one I can remember seeing.
    http://www.ls1.com/forums/f8/wheel-hop-149728/#post2537811

    What is your fabrication skill level? Almost no one fabs in a rearend for these cars when you can buy one off the shelf. Plus the torque arm mounting scares people away from fabbing a rear

  8. #8
    Moderator Firebirdjones's Avatar
    Join Date
    May 2006
    Location
    Arizona
    Posts
    12,552
    Ya I've seen that, and I don't mean to take anything away from Southpaw, but if I fabbed a housing for a customer like that, I'd be out of business.

    Much better ways to go about that. For starters, why bother trying to adapt the Fbody axle tubes to the 8.8 center section just because it has proper brackets on it.
    He would have been much better off buying the brackets new, and welding them to the 8.8 axle tubes, and then change the ends to a 9 inch style hub/bearing setup, from there the brakes are a simple bolt on. Then you have a bolt in 9inch style axle without C-clips, much stronger and safer, and a much cleaner install that way....because whether you adapt the tubes, or simply weld on new brackets,,,,,,you'll still have to setup the tubes or brackets with an angle finder for proper location,,,so nothing was avoided by using this method.

    Fabbing shouldn't scare people away. When it comes to the 9 inch it's a piece of cake. Currie makes the torque arm bracket, it only installs one way, you can't really screw it up. They also sell the correct spring perch brackets as well as the lower control arm and panhard bar brackets. These brackets only require a tape measure and an angle finder, along with some welding skill.

    If you really wanted to save money, you can carefully cut off the factory brackets from the 7.5,,,radius the mounting area to fit the larger axle tube, and weld them onto the 9 inch.
    I much rather prefer to buy the brackets new from Currie, they come already made for the larger tubes. Saves time and time is money.

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. Rear Chassis/suspension "popping" noise
    By Whamhammer in forum General Help
    Replies: 6
    Last Post: 07-23-2015, 07:18 PM
  2. Keep current rear CETA wheels 17x11" or go 18x11"?
    By NeeD4SpeeD in forum Wheels and Tires
    Replies: 13
    Last Post: 11-07-2011, 04:15 PM
  3. Question: Wheel Help! 17" Rear and 16" Front"
    By camaroluvr447 in forum Wheels and Tires
    Replies: 8
    Last Post: 05-16-2010, 10:02 PM
  4. WTB Silver / Black "SS" emblem & 02 Rear Bowtie
    By SPECOPS94 in forum Parts Wanted / Trade
    Replies: 4
    Last Post: 04-26-2009, 05:00 PM
  5. Help: "bump stop" gettin in the way of new rear tires!!!
    By stangsr4loosers in forum Wheels and Tires
    Replies: 1
    Last Post: 11-08-2008, 09:02 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
  •