Results 1 to 3 of 3

rebuilding a 3.8

This is a discussion on rebuilding a 3.8 within the Internal Engine forums, part of the LSx Technical Help Section category; Hey guys I have 98 v6 bird which was torn down to the block and seems my mechanic said screw ...

  1. #1
    Junior Member
    Join Date
    Jun 2015
    new bern north carolina

    1998 firebird

    rebuilding a 3.8

    Hey guys I have 98 v6 bird which was torn down to the block and seems my mechanic said screw me on putting it together. The question I have is how hard would it be to reassemble the motor if the parts are all still fine?

  2. #2
    Spaz is My Mentor SMWS6TA's Avatar
    Join Date
    Feb 2009
    Ugy Lower Corner of AL

    Navy Blue Metallic
    98 T/A w/a little mods...

    If this guy screwed you like that I'd be worried what else he did. I'd have another shop look over just to make sure clearances and block surface doesn't need addressed 1st.

    These next 3 are very important...

    Otherwise you'll need the torque specs and sequence for all bolts. Understand some bolts are 1 time use only - Rod and head bolts, specifically.

    Bearings (new, never reuse old bearings, just asking it to grenade) You should always check clearances for rods and crank bearings.

    Piston Rings - Need to know correct gap, some ppl will reuse them but like bearings I recommend fresh set. Falls into the "do it right now or do it again later" category.

    Heads - should be checked for surface flatness. All Aluminum heads will warp over time.

    Gaskets - I'm not a fan of reusing gaskets, MLS are about the only one I'll reuse.

    There's a lot to rebuilding an engine as you see. I've built mine (twice technically), still going strong.
    Last edited by SMWS6TA; 07-06-2016 at 09:24 AM.

  3. #3
    Super Moderator
    pajeff02's Avatar
    Join Date
    Feb 2009
    Mansfield, PA

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

    ^^ This. Bearing clearances, ring gaps, assembly lubricant, assembly procedures, cleanliness, and adhering to torques specs are all critical to a proper engine rebuild.

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. rebuilding
    By 98transamfirebird in forum General Help
    Replies: 2
    Last Post: 10-22-2013, 07:59 AM
  2. Help: rebuilding the tranny
    By blk_ss02 in forum Automatic Transmission
    Replies: 0
    Last Post: 11-24-2008, 08:34 AM
  3. Question: maybe rebuilding this LS1
    By LS-T in forum Internal Engine
    Replies: 3
    Last Post: 06-21-2008, 01:36 PM
  4. Anyone Up To Rebuilding A Ls1
    By jbigdawg79 in forum General Help
    Replies: 0
    Last Post: 05-17-2006, 07:38 PM
  5. Started Rebuilding The LT1
    By TransAm45 in forum LT1
    Replies: 0
    Last Post: 12-25-2005, 08:44 AM


Posting Permissions

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