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Forum: LSX Truck Conversions

All LS Based Conversions

  1. Sticky Thread Sticky: OBS to LSx conversion

    Starting this to answer as many questions as I can in one place. I am trying to compile the most complete list of what to do to complete a conversion...

    Started by RedHeartbeat‎, 12-17-2006 02:35 AM
    15 Pages
    1 2 3 ... 15
    • Replies: 145
    • Views: 477,758
    10-24-2020, 02:14 PM Go to last post
  2. Sticky Thread Sticky: Part Numbers needed for an LS1 swap

    Hey Guys, these questions get asked quite a bit, and what better way than to make a sticky with all the part numbers you'll need. I'm open to...

    Started by farmtruc‎, 03-01-2005 12:57 AM
    5 Pages
    1 2 3 ... 5
    • Replies: 49
    • Views: 163,005
    09-24-2017, 04:33 PM Go to last post
  3. Sticky Thread Sticky: PCM pinout diagrams

    2001 silverado (Thanks Banker099) This image has been resized. Click this bar to view the full image. The original image is sized 799x247...

    Started by RedHeartbeat‎, 11-21-2008 09:52 AM
    2 Pages
    1 2
    • Replies: 19
    • Views: 187,041
    04-20-2016, 11:29 PM Go to last post
  1. switch 12v were to tap?

    I'm getting down to the final stage of my swap, I have my harness thined out and lengthened/ shortened. So this leads my to the fuse block and...

    Started by LOWnEASY‎, 02-24-2014 09:23 PM
    • Replies: 6
    • Views: 2,940
    12-26-2025, 01:53 AM Go to last post
  2. LY6 accessories on LQ4?

    I have a LQ4 from a 2003 2500 Sierra. I got this motor without any accessories. My friend and fellow LSx engine enthusiast called me the other day...

    Started by 90'rado‎, 01-02-2012 07:27 PM
    • Replies: 8
    • Views: 5,060
    12-24-2025, 09:19 PM Go to last post
  3. Chasing the Perfect Online Casino Experience Without Getting Burned

    I’ve been jumping between different gaming platforms lately, trying to figure out why some online casinos feel smooth, fair, and genuinely exciting...

    Started by robertbrown‎, 11-24-2025 05:49 AM
    • Replies: 4
    • Views: 1,051
    12-16-2025, 09:29 AM Go to last post
  4. Johns custom wiring

    So, I just want to put this out there before anyone else gets screwed over by this *******. Johns custom wiring 475 E South Airport Rd Traverse...

    Started by Toyotawheeler79‎, 11-26-2023 01:53 PM
    • Replies: 1
    • Views: 10,208
    11-29-2025, 07:48 AM Go to last post
  5. 5.3 compatible with older 4L60?

    I have a 94 2wd with the early 4l60E, and i plan on doing a 5.3 swap and sticking with EFI.Id like to run either a stock truck harness or a Nelson...

    Started by L&M‎, 07-25-2010 11:42 AM
    • Replies: 8
    • Views: 14,649
    11-19-2025, 01:01 AM Go to last post
  6. will a ls1 conversion run without computer tune?

    ive got a 98 f-body ls1 with a street and performance wiring harness. Just wondering if I can even start the engine without having the computer...

    Started by jimmy p‎, 03-29-2005 11:23 AM
    • Replies: 9
    • Views: 4,655
    10-27-2025, 05:23 AM Go to last post
  7. Unhappy Bad News About the Build

    Well, I was gettin in to the nitty gritty of things today and ran into a problem. I removed the bed and about 6 inches back from the cab, the frame...

    Started by 81C10LS3‎, 07-22-2010 10:38 PM
    • Replies: 9
    • Views: 3,519
    10-26-2025, 06:47 AM Go to last post
  8. Trash the convenience center?

    91 silverado, 2001 5.3, 95 dash.(no airbag in it, has cupholders) I took the underhood junction box from the 2001 and have it on my fenderwell....

    Started by r6z4o6‎, 11-09-2008 06:16 PM
    • Replies: 4
    • Views: 4,795
    10-26-2025, 06:02 AM Go to last post
  9. I can buy a base 5.3 and swap everything to a 402 shortblock?

    I am trying to find the cheapest but easiest route to my power goals. I can buy a used cheap 5.3 with high miles and swap the shortblock out with a...

    Started by Jewmont3‎, 04-24-2006 12:17 AM
    • Replies: 8
    • Views: 2,631
    10-26-2025, 05:09 AM Go to last post
  10. T56 swap into NBS

    I know I've talked a little to Ron on this board about his M5 to M6 swap, but has anyone swapped an A4-M6 in the NBS trucks? My main questions are:...

    Started by Scream‎, 03-05-2004 09:02 AM
    • Replies: 5
    • Views: 4,581
    10-21-2025, 11:26 AM Go to last post
  11. 2000 5.3/4l60e swap to 2007 6.0/4l80e

    alright, Ive done alot of searching and found a lot of good info but not quite what i was looking for. I found a 6.0,4l80e,t-case, wiring...

    Started by JoshB‎, 07-11-2010 11:43 AM
    2 Pages
    1 2
    • Replies: 19
    • Views: 8,676
    10-21-2025, 11:23 AM Go to last post
  12. Computer?

    If I go with a computer from an LS1 for my 5.3, can I use one that was for a 6 speed car and have it programmed? As of now, the only computer I have...

    Started by Fstfwrd‎, 11-02-2005 10:31 PM
    • Replies: 7
    • Views: 20,715
    10-12-2025, 12:09 AM Go to last post
  13. Hidden Casino Secrets: Tips and Tricks for Success!

    Hey folks! I've been exploring online casinos for a while now but still feel like I’m not getting the most out of my experience. How do you maximize...

    Started by robertbrown‎, 11-26-2024 01:59 PM
    • Replies: 5
    • Views: 26,799
    09-06-2025, 01:51 PM Go to last post
  14. Starter wires

    On the 5.3 starter there are 3 posts on the starter. With engine in truck. The biggest post closest to frame goes to battery hot. The small post...

    Started by 468Blazer‎, 08-09-2008 06:30 PM
    2 Pages
    1 2
    • Replies: 10
    • Views: 2,693
    09-04-2025, 12:55 PM Go to last post
  15. Vapor purge valve and 4L60 tailhousing

    Couple of questions? 1) the vapor purge valve on front of intake can we get rid of this or is it something needed? If I do keep it does it tie in...

    Started by 468Blazer‎, 07-30-2008 10:44 PM
    • Replies: 3
    • Views: 20,832
    09-16-2024, 08:27 AM Go to last post
  16. Pnp prnd switch

    I'm new here and i'm doin a conversion useing a 2003 5.3 and 4l60e . My question is now that i have removed the un needed wires from the harness i...

    Started by turboanthoni‎, 05-17-2011 11:31 PM
    • Replies: 9
    • Views: 12,804
    09-14-2024, 09:01 AM Go to last post
  17. 4.3 to lq4 fuse box question

    I am swapping a 4.3 in a 2006 silverado 1500, to a 6.0 LQ4 from a 2002 2500 I have engine, fuse box, pcm, and harness from the 2500, am I better to...

    Started by K2006‎, 09-06-2024 11:05 PM
    • Replies: 0
    • Views: 6,082
    09-06-2024, 11:05 PM Go to last post
  18. Cool How I did 5.3 to nv3500 5 speed

    I'm going to post what I did to mate my nv3500 to my 5.3 since I wasn't able to find any reliable info when I did my swap. I bought the flywheel from...

    Started by tbr89gmc‎, 12-24-2010 11:33 AM
    4 Pages
    1 2 3 ... 4
    • Replies: 33
    • Views: 125,884
    08-21-2024, 09:25 AM Go to last post
  19. Tach does not work correctly after 8.1L swap

    Hello all, I completed an 8.1L swap last year in a 70’s GM truck using a MEFI-4 ECM. Never got that damn thing tuned right so I just replaced ...

    Started by DirtyLarry‎, 12-21-2009 05:15 PM
    • Replies: 7
    • Views: 23,048
    06-14-2024, 08:39 AM Go to last post
  20. S10 SWAP -Got my 2001 5.3 & 4L60E home but want NV3500. Are these parts what I need ?

    Hello. New member here. I finally brought home my 5.3 & 4L60E in my minivan since my truck's 4-banger is knocking. The 2nd 4L60 is for my buddy....

    Started by waid302‎, 03-16-2013 12:01 PM
    2 Pages
    1 2
    • Replies: 11
    • Views: 28,596
    05-05-2024, 09:51 AM Go to last post

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