Engine Performance + Maintenance

If it's under the hood, its in here.

  1. 96+ Vortec Performance + Computer Swaps

    If you want to do the 0411 PCM swap or have a 1996+ Vortec motor this is your forum!
    716
    Discussions
    8,445
    Messages
    Latest: STILL chasing hard start.... ztarleton, Aug 18, 2019 at 11:03 AM

  2. LSX + Carb Swaps

    This section is for info on LSX or carburetor swaps into the OBS trucks.
    386
    Discussions
    5,014
    Messages
    Latest: Gen V L83 swap in OBS Tahoe SteveO99, Aug 19, 2019 at 1:32 PM

  3. Exhaust

    Anything exhaust - from headers cats and pipes to tips.
    796
    Discussions
    9,547
    Messages
    Latest: Muffler for 454 b454rat, Aug 19, 2019 at 8:22 PM
Car Parts
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  1. Bighead38

    Putting A Chip In A TBI Truck

    Bighead38, Dec 3, 2009 ... 16 17 18
    Replies:
    171
    Views:
    148,610
    PlayingWithTBI
    Aug 19, 2019 at 9:52 PM
  2. Mike

    The Stupid Engine Questions Thread

    Mike, Dec 3, 2009 ... 111 112 113
    Replies:
    1,122
    Views:
    161,905
    PlayingWithTBI
    Aug 15, 2019 at 2:10 PM
  3. Ginger

    Water Pump Relacement

    Ginger, Dec 4, 2009 ... 5 6 7
    Replies:
    68
    Views:
    42,962
    Trigger_guard
    Jun 21, 2019
  4. Devs93

    The Ultimate 88-98 Performance Toolbox

    Devs93, Aug 1, 2012 ... 2 3
    Replies:
    26
    Views:
    125,713
    Riverado2012
    Mar 13, 2019
  5. monstar_est87

    How to MarkVIII your OBS on a budget..!

    monstar_est87, Apr 30, 2012 ... 14 15 16
    Replies:
    156
    Views:
    92,866
    Supercharged111
    Jan 28, 2019
  6. Ginger

    Intake Gasket Replacement

    Ginger, Dec 4, 2009 ... 7 8 9
    Replies:
    86
    Views:
    61,351
    Markus
    Jan 23, 2019
  7. Greg

    Maintenance: RPO Code Database & Decoder

    Greg, Dec 4, 2009 ... 2 3
    Replies:
    22
    Views:
    23,104
    Kyle89
    Dec 30, 2018
  8. shelbyt.67

    ULTIMATE TBI mods stage 1

    shelbyt.67, Jun 28, 2012 ... 23 24 25
    Replies:
    245
    Views:
    195,800
    92GMCK2500
    Nov 21, 2018
  9. Hodges87

    How to Replace oil filter adapter gasket & o-ring

    Hodges87, Dec 14, 2009 ... 3 4 5
    Replies:
    46
    Views:
    105,871
    Chevy blood
    Aug 16, 2018
  10. supjim12

    Tune Up Parts Numbers

    supjim12, Dec 22, 2009 ... 2 3 4
    Replies:
    33
    Views:
    33,439
    Schurkey
    Jul 20, 2018
  11. Greg

    GMT400 History

    Greg, Mar 16, 2010 ... 18 19 20
    Replies:
    199
    Views:
    188,838
    ThundahBeagle
    Nov 26, 2017
  12. Mike

    LS Swapping and Performance FAQ

    Mike, Aug 3, 2013
    Replies:
    9
    Views:
    17,920
    Fedeleon11
    Sep 24, 2016
  13. 88GMCtruck

    Engine Oil Cooler Upgrade: Add 2 quarts! (SAS guys you'll want to see this)

    88GMCtruck, Apr 14, 2010 ... 2 3
    Replies:
    21
    Views:
    44,670
    txgp17
    Oct 24, 2013
  1. RedGraydonSS92

    92 C1500 4L80E w/ compushift trying to get OEM speedo working

    RedGraydonSS92, Aug 19, 2019 at 10:50 PM
    Replies:
    0
    Views:
    13
    RedGraydonSS92
    Aug 19, 2019 at 10:50 PM
  2. skylark

    Tech/info map sensor seal

    skylark, Aug 19, 2019 at 12:31 AM
    Replies:
    4
    Views:
    100
    Supercharged111
    Aug 19, 2019 at 9:25 PM
  3. TheAutumnWind

    4.3 tbi dying when hot

    TheAutumnWind, Jun 11, 2019 ... 2 3 4
    Replies:
    31
    Views:
    916
    PlayingWithTBI
    Aug 19, 2019 at 7:20 PM
  4. Nash Bridges

    94 Suburban C1500 engine swap

    Nash Bridges, Aug 18, 2019 at 11:51 PM
    Replies:
    8
    Views:
    149
    L31MaxExpress
    Aug 19, 2019 at 6:12 PM
  5. LoCascio_Inc

    Small Displacement Diesel Swap Options?

    LoCascio_Inc, Aug 17, 2019 at 5:29 PM ... 2
    Replies:
    17
    Views:
    497
    KennedyEngine
    Aug 19, 2019 at 4:30 PM
  6. m002922

    New L31 - HT383 Cam - COMP Cams 1418-16 Roller Rockers - Rubbing

    m002922, Aug 12, 2019 ... 2
    Replies:
    14
    Views:
    606
    PlayingWithTBI
    Aug 19, 2019 at 2:40 PM
  7. PolyMatt

    Experience with this crate engine company?

    PolyMatt, Aug 17, 2019 at 2:45 PM
    Replies:
    8
    Views:
    289
    PlayingWithTBI
    Aug 19, 2019 at 1:20 PM
  8. kennythewelder

    Fuel millage

    kennythewelder, Aug 14, 2019 at 3:59 PM ... 2
    Replies:
    19
    Views:
    752
    SK Productions
    Aug 19, 2019 at 11:52 AM
  9. jonathonar89

    Gen V 454 with Edelbrock Intake

    jonathonar89, Aug 18, 2019 at 9:00 AM
    Replies:
    4
    Views:
    155
    bobby v
    Aug 19, 2019 at 11:30 AM
  10. Dd1994

    Rear hatch seal part number

    Dd1994, Aug 19, 2019 at 10:48 AM
    Replies:
    1
    Views:
    44
    fancyTBI
    Aug 19, 2019 at 11:20 AM
  11. Trenton

    5.7 Vortec Upgrade Options

    Trenton, Aug 12, 2019 ... 6 7 8
    Replies:
    70
    Views:
    2,467
    Trenton
    Aug 19, 2019 at 10:11 AM
  12. Johnny89345

    K3500 no lights at all

    Johnny89345, Aug 17, 2019 at 11:12 AM
    Replies:
    8
    Views:
    174
    Johnny89345
    Aug 19, 2019 at 9:51 AM
  13. 16Raptor

    Best hand held programmer 5.7 vortec?

    16Raptor, Aug 14, 2019 at 10:26 PM ... 2
    Replies:
    10
    Views:
    464
    Trenton
    Aug 19, 2019 at 9:37 AM
  14. Marc Elkins

    6.5L MAP issue

    Marc Elkins, Aug 5, 2019 ... 2
    Replies:
    11
    Views:
    312
    Marc Elkins
    Aug 19, 2019 at 9:26 AM
  15. 92Red454SS

    92 454SS Hard Start stalls fuel pump runs continuously

    92Red454SS, Aug 12, 2019 ... 2 3
    Replies:
    25
    Views:
    721
    DerekTheGreat
    Aug 19, 2019 at 7:22 AM
Showing threads 1 to 15 of 7,618

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