Results 1 to 10 of 10

How easy is it to swap in a LS3 motor into a '00 auto?

This is a discussion on How easy is it to swap in a LS3 motor into a '00 auto? within the General Help forums, part of the LSx Technical Help Section category; Just wondering how easy this is to do when the time comes for a new motor. Plan on keeping mine ...

  1. #1
    Member Since 1998 Mecinoid's Avatar
    Join Date
    May 2007
    Location
    Livermore, Ca.
    Posts
    498
    '98,'00-B 93,03,11,14-V

    How easy is it to swap in a LS3 motor into a '00 auto?

    Just wondering how easy this is to do when the time comes for a new motor. Plan on keeping mine for another 20 years.

  2. #2
    Senior Member Naaman's Avatar
    Join Date
    Mar 2010
    Location
    AZ
    Posts
    1,442

    Cayanne
    98 Z28 Vert M6

    I looked into this. From what I was able to learn it would be a significant job, including needing to update the wiring harness.
    Lid, Throttle Body, LS6 Intake, Heads, Cam, Magnaflow, LS7 Clutch, SFCs, STB, Panhard Bar, Strano Springs, Hollow Sway Bars, Poly/Roto LCAs, Konis, MGW Shifter

  3. #3
    Spaz is My Mentor SMWS6TA's Avatar
    Join Date
    Feb 2009
    Location
    Ugy Lower Corner of AL
    Posts
    10,996

    Navy Blue Metallic
    98 T/A w/ mods, 00 FBVert

    You do have a ton of options with putting a new motor in.

    If looking for the power of a LS3 you can also look for a 6.0L block like a LQ4 or LQ9 and built it cheaper than a LS3 BUT you can keep your wire harness, ecm & for a bonus use LS3 style heads & intake.

    6.0L blocks are widely available and can be dirt cheap like mine was, I picked up a short block for $250. Most though are from around $600-1200 depending on your area. You can bore them out to at least 4.030", some I've seen a bit more but that required some testing of the block to make sure it could handle it. With 4" stroker crank you can have a 403ci (with a 4.005" bore) like mine or a 408ci (4.030" bore) or with some engine work on the cyl for clearance a 421 with a 4.030" bore and a 4.125" crank. Match that with LS3 style heads, custom grind cam, and LS3 FAST Intake and you'll have one hell of a beast.


    The biggest PITA with going to LS3 is that you'll need to either get the wire harness & ECM with the engine and then have the harness modified to work with your gauge cluster or get a custom harness form Painless Performance. Both harness mod or new are expensive, Looking at around $650 or a bit more depending on which route you go. And you'll need the ecm to work with the engine because it's a 58x reluctor wheel. Our cars are all 24x reluctor wheel. There is a cheat in that you can press off the 58x RW and press on a 24RW. Doing it like that may be able to drop down the costs of harness mods some but there will still be a need to modify it.


    My next major engine mods will be custom grind cam & LS3 heads as well as LS3 Fast 102 intake OR FI built.
    http://www.ls1.com/forums/f7/my-6-liter-build-174257/

    http://www.ls1.com/forums/f8/my-8-8-rear-build-165553/

    6.0L Block - Forged 403 built, breaking it in , Polluter Stg3 Cam, FAST 102mm Intake, NW102 TB, MSD wires, NGK TR6 plugs, Truck Coil Packs, LS3 Fuel Injectors, CC Pacesetter LT Headers, TS&P ORY, QTP e-Cutout, Magnaflow Muffler, 104mm Air Lid & Line Lock, Catch Can, Stage 2 T56 w/Viper shaft, PRO 5.0 Shifter, Tick MC, Monster Stg 4 Clutch, QT SFI BH, MWC DSL, UMI: SFC, PHB, LCA's, LCA Relocation Brackets & TA, Hotchkis Springs (1" Drop), YR1 Snowflake Wheels wrapped in NT555 tires & Custom Fab Ford 8.8 rear w/4.10 Yukon Gears, WSQ Hood, 3"CM Strange Eng Drive Shaft.

    00 FB Vert

    Horsepower never lies, but is often lied about!

  4. #4
    Senior Member raynor139's Avatar
    Join Date
    Aug 2007
    Location
    Greensboro, NC
    Age
    33
    Posts
    1,332

    Pewter
    2002 Trans Am WS6 M6

    Not as bad as you think. Here's a write up on how to from super Chevy.

    http://www.superchevy.com/how-to/0902gmhtp-chevy-camaro-z28-ls3-engine-swap/

    http://www.superchevy.com/how-to/0903gmhtp-2001-chevy-camaro-z28-ls3-dual-disc-clutch-wiring-harness-install/

    Go through the pictures they will give you more of the details.

    Big things are reluctor wheel conversion most people just use the box that lingenfelter makes. Ls3 comes with a drive by wire throttle body so you got to convert that back to a cable driven style. Wiring harness which from everything I've read you can buy kits that plug into your existing one and a few other small things. Alot easier then it used to be. Alot of these parts can be sourced as a whole kit from a few vendors now a days.
    Mods - Lid, Skip Shift Eliminator, MGW shifter, UMI SFCs, Founders Lower Control Arms, Founders Panhard Bar, Founders Adj. Torque Arm, UMI Torque arm mount, MWC Drive shaft safety loop, KONI Yellows, Strano Springs, Strano Sway bars, UMI Upper and lower A Arms, 160 thermostat, TSP headers and TSP true duals Monster stage 2 clutch, racetronix fuel pump, Strange S60 rear axle and tune by Frost.

  5. #5
    Spaz is My Mentor SMWS6TA's Avatar
    Join Date
    Feb 2009
    Location
    Ugy Lower Corner of AL
    Posts
    10,996

    Navy Blue Metallic
    98 T/A w/ mods, 00 FBVert

    On the throttle bodies there are several venders that sell cable LS3 style TB's Nick Williams is one. I have his 102TB and it is a niece piece. No complaints at all.

  6. #6
    Member Since 1998 Mecinoid's Avatar
    Join Date
    May 2007
    Location
    Livermore, Ca.
    Posts
    498
    '98,'00-B 93,03,11,14-V

    Very Kewl guys thanks for the info. My '98 is supercharged and only has 54K on it.

    My '00 T/A has right at 100K so I think I will go with 6.0L block like the LQ4 or LQ9 and built it as SMWSTA6 suggests. I really don't want to deal with wiring harness swap.

    From what I am hearing the LQ4 or LQ9 is plenty strong enough for street and strip use.
    Do you think I can easily get 475HP+ out of that set up reliably?
    Life comes at you fast. Grab it and hold onto it with all your might.

    Living life in the fast lane. 182IDIE


  7. #7
    Senior Member Whamhammer's Avatar
    Join Date
    Sep 2010
    Location
    Bel Air, Maryland
    Posts
    1,403

    Silver
    '02 Trans Am WS-6, 6M

    Quote Originally Posted by Mecinoid View Post
    Very Kewl guys thanks for the info. My '98 is supercharged and only has 54K on it.

    My '00 T/A has right at 100K so I think I will go with 6.0L block like the LQ4 or LQ9 and built it as SMWSTA6 suggests. I really don't want to deal with wiring harness swap.

    From what I am hearing the LQ4 or LQ9 is plenty strong enough for street and strip use.
    Do you think I can easily get 475HP+ out of that set up reliably?
    475+ HP at the crank or wheels?
    SLP Air Lid/Smooth Bellows
    Kooks Emissions LT Headers/Catted Y pipe
    NGK TR55 plugs
    Magnaflow Cat-back
    Spohn Front Upper Tubular Control Arms
    UMI Front Lower Tubular Control Arms
    UMI Rear Lower Control Arms/ Adjustable Panhard Rod
    Factory C5 Z06 17x9.5 wheels w/ 285-40-17 Continental Extreme Contact DW's all the way around.
    Dyno Dynamics dynoed @:
    356 rwhp, 360 rwlb/tq

  8. #8
    Senior Member Whamhammer's Avatar
    Join Date
    Sep 2010
    Location
    Bel Air, Maryland
    Posts
    1,403

    Silver
    '02 Trans Am WS-6, 6M

    If it wasnt for all of the extra stuff to convert an LS2 or 3 to work with an LS1 system (LS2 being simpler), I wouldve bought a bare short block by now. Now and then, part of me starts to weigh the difference in cost of a 6.0/6.2 aluminum block and the cost of resleeving the bores to 4.00-4.03. I bet the costs are pretty close.

  9. #9
    Spaz is My Mentor SMWS6TA's Avatar
    Join Date
    Feb 2009
    Location
    Ugy Lower Corner of AL
    Posts
    10,996

    Navy Blue Metallic
    98 T/A w/ mods, 00 FBVert

    Quote Originally Posted by Mecinoid View Post
    Very Kewl guys thanks for the info. My '98 is supercharged and only has 54K on it.

    My '00 T/A has right at 100K so I think I will go with 6.0L block like the LQ4 or LQ9 and built it as SMWSTA6 suggests. I really don't want to deal with wiring harness swap.

    From what I am hearing the LQ4 or LQ9 is plenty strong enough for street and strip use.
    Do you think I can easily get 475HP+ out of that set up reliably?
    Very easy...

    My Engine Build
    6.0L (LQ4) bored 4.005"
    K1 Forged 4" Stroker Crank
    Forged Pistons and I beam Rods
    Polluter stg3 cam
    Fast 102 Intake
    NW 102 TB
    LS3 injectors
    Stock 243 Heads (no P&P or Milled down)

    Going through a T56, 8.8 rear w/4.10 GR, my girl put down 450 RWHP & 440TQ at the wheel.


    My biggest hold back is my heads. If I had a nice set of TF Heads I'd be real close to 500.

    When the time comes I'll need to decide between staying as a NA or make the huge jump to FI. I do know I'll go to LS3 heads and Fast 102 LS3 style intake with a custom grind.



    Now some info if you go shopping. Only difference between LQ4 and LQ9 is the pistons are dish, while the 9 has flat top. The 4 CR is around 9.4 while the 9 is 10.3ish CR. You'll want a 99-04 yr block so you won't need to address the reluctor wheel.

    Quick way to identify what reluctor wheel you have is look at the Crank sensor. Black is 24x, grey is 58x. When you're ready hit me up I can answer most questions on the 6.0L blocks.

    Last thing - LQ blocks are only 60ish lbs heavier than the AL blocks. Most AL blocks can't be bored out more than 0.010" some only 0.005" while iron blocks as stated before can handle 0.030" easy and if more some testing of the block. The other major bonus of iron blocks - more boost potential over AL blocks.

  10. #10
    Member Since 1998 Mecinoid's Avatar
    Join Date
    May 2007
    Location
    Livermore, Ca.
    Posts
    498
    '98,'00-B 93,03,11,14-V

    Quote Originally Posted by SMWS6TA View Post
    Very easy...

    My Engine Build
    6.0L (LQ4) bored 4.005"
    K1 Forged 4" Stroker Crank
    Forged Pistons and I beam Rods
    Polluter stg3 cam
    Fast 102 Intake
    NW 102 TB
    LS3 injectors
    Stock 243 Heads (no P&P or Milled down)

    Going through a T56, 8.8 rear w/4.10 GR, my girl put down 450 RWHP & 440TQ at the wheel.


    My biggest hold back is my heads. If I had a nice set of TF Heads I'd be real close to 500.

    When the time comes I'll need to decide between staying as a NA or make the huge jump to FI. I do know I'll go to LS3 heads and Fast 102 LS3 style intake with a custom grind.



    Now some info if you go shopping. Only difference between LQ4 and LQ9 is the pistons are dish, while the 9 has flat top. The 4 CR is around 9.4 while the 9 is 10.3ish CR. You'll want a 99-04 yr block so you won't need to address the reluctor wheel.

    Quick way to identify what reluctor wheel you have is look at the Crank sensor. Black is 24x, grey is 58x. When you're ready hit me up I can answer most questions on the 6.0L blocks.

    Last thing - LQ blocks are only 60ish lbs heavier than the AL blocks. Most AL blocks can't be bored out more than 0.010" some only 0.005" while iron blocks as stated before can handle 0.030" easy and if more some testing of the block. The other major bonus of iron blocks - more boost potential over AL blocks.
    That's about what I am wanting without the cost of a supercharger. I am into mine about 11K. I'd like to build a motor for about 3-5K with 500HP

    Thx for the suggestions and pointers to potential big durable power.

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. 5th Gen to 4th Gen auto swap
    By woodymaro in forum Drivetrain
    Replies: 1
    Last Post: 02-11-2012, 03:25 PM
  2. tips for an easy and smooth gear swap
    By Bandit1 in forum Drivetrain
    Replies: 0
    Last Post: 04-25-2009, 03:49 PM
  3. What happend to my system after easy speaker swap?
    By Mike Hawk in forum Stereo and Electronics
    Replies: 2
    Last Post: 10-08-2007, 06:56 PM
  4. Replies: 21
    Last Post: 03-11-2007, 09:28 AM
  5. auto to m6 swap?
    By predator in forum Drivetrain
    Replies: 4
    Last Post: 12-20-2005, 08:35 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
  •