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!
    787
    Discussions
    9,447
    Messages
    Latest: No start a new engine 7.4 Vortec Bear 77, May 29, 2020 at 11:20 PM

  2. LSX + Carb Swaps

    This section is for info on LSX or carburetor swaps into the OBS trucks.
    410
    Discussions
    5,213
    Messages
    Latest: Ls swap into a 96-98 obs Brettking, May 28, 2020 at 8:55 PM

  3. Exhaust

    Anything exhaust - from headers cats and pipes to tips.
    836
    Discussions
    9,972
    Messages
    Latest: Air intake question 24 Karat Brown, May 29, 2020 at 12:00 PM
Car Parts
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  1. Greg

    GMT400 History

    Greg, Mar 16, 2010 ... 19 20 21
    Replies:
    202
    Views:
    215,908
    schwinnman67
    May 29, 2020 at 9:55 PM
  2. Ginger

    Intake Gasket Replacement

    Ginger, Dec 4, 2009 ... 9 10 11
    Replies:
    105
    Views:
    74,634
    Slime
    May 28, 2020 at 2:50 PM
  3. Bighead38

    Putting A Chip In A TBI Truck

    Bighead38, Dec 3, 2009 ... 17 18 19
    Replies:
    187
    Views:
    178,590
    884x4310ci
    May 26, 2020 at 4:14 PM
  4. Mike

    The Stupid Engine Questions Thread

    Mike, Dec 3, 2009 ... 119 120 121
    Replies:
    1,205
    Views:
    188,999
    HawkDsl
    May 13, 2020
  5. shelbyt.67

    ULTIMATE TBI mods stage 1

    shelbyt.67, Jun 28, 2012 ... 24 25 26
    Replies:
    253
    Views:
    223,593
    PlayingWithTBI
    Apr 12, 2020
  6. Ginger

    Water Pump Relacement

    Ginger, Dec 4, 2009 ... 6 7 8
    Replies:
    77
    Views:
    52,487
    54vicky
    Feb 28, 2020
  7. Greg

    Maintenance: RPO Code Database & Decoder

    Greg, Dec 4, 2009 ... 2 3
    Replies:
    23
    Views:
    28,593
    dAT OBS
    Feb 28, 2020
  8. Devs93

    The Ultimate 88-98 Performance Toolbox

    Devs93, Aug 1, 2012 ... 2 3
    Replies:
    28
    Views:
    147,310
    spolly74
    Feb 26, 2020
  9. monstar_est87

    How to MarkVIII your OBS on a budget..!

    monstar_est87, Apr 30, 2012 ... 15 16 17
    Replies:
    164
    Views:
    107,433
    McBroom
    Dec 26, 2019
  10. supjim12

    Tune Up Parts Numbers

    supjim12, Dec 22, 2009 ... 2 3 4
    Replies:
    34
    Views:
    41,898
    Donald Mitchell
    Dec 26, 2019
  11. Hodges87

    How to Replace oil filter adapter gasket & o-ring

    Hodges87, Dec 14, 2009 ... 3 4 5
    Replies:
    46
    Views:
    117,968
    Chevy blood
    Aug 16, 2018
  12. Mike

    LS Swapping and Performance FAQ

    Mike, Aug 3, 2013
    Replies:
    9
    Views:
    21,472
    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:
    52,117
    txgp17
    Oct 24, 2013
  1. andy welch

    Engine problems, need advice

    andy welch, May 29, 2020 at 8:59 PM
    Replies:
    2
    Views:
    77
    MIKE BROGDON
    May 30, 2020 at 6:26 AM
  2. _nickjoseph

    Power steering questions

    _nickjoseph, May 21, 2020 ... 3 4 5
    Replies:
    47
    Views:
    1,710
    HawkDsl
    May 30, 2020 at 1:45 AM
  3. wiscomick

    Rough idle, P0300, Help!

    wiscomick, May 7, 2020 ... 3 4 5
    Replies:
    46
    Views:
    1,615
    HotWheelsBurban
    May 30, 2020 at 12:34 AM
  4. SpencerW

    Tailight issues..

    SpencerW, May 30, 2020 at 12:01 AM
    Replies:
    1
    Views:
    52
    SAATR
    May 30, 2020 at 12:33 AM
  5. ht89

    Media Blasted Aluminum Heads

    ht89, May 27, 2020 at 8:03 AM
    Replies:
    7
    Views:
    251
    GarrettGmc
    May 29, 2020 at 11:22 PM
  6. Connor C

    305 rebuild with performance parts

    Connor C, May 27, 2020 at 10:59 AM ... 2
    Replies:
    15
    Views:
    439
    Schurkey
    May 29, 2020 at 10:58 PM
  7. Tim W

    Not too sure

    Tim W, May 28, 2020 at 12:24 PM ... 2 3
    Replies:
    21
    Views:
    415
    PlayingWithTBI
    May 29, 2020 at 7:40 PM
  8. VALBOLSKI

    Advice on new engine

    VALBOLSKI, May 29, 2020 at 12:08 AM
    Replies:
    8
    Views:
    151
    arrg
    May 29, 2020 at 7:02 PM
  9. dakotabman

    Broken manifold bolts

    dakotabman, May 19, 2020 ... 2 3 4
    Replies:
    37
    Views:
    1,263
    dakotabman
    May 29, 2020 at 5:34 PM
  10. Wiregrass mechanic

    Help needed ASAP. 99 4.8 in 94 c1500

    Wiregrass mechanic, May 19, 2020 ... 2
    Replies:
    15
    Views:
    387
    Wiregrass mechanic
    May 29, 2020 at 3:42 PM
  11. Joaquin P

    TBI to Carb Conversion Wiring

    Joaquin P, May 28, 2020 at 8:03 AM
    Replies:
    8
    Views:
    245
    Jerryred94silvy
    May 29, 2020 at 3:22 PM
  12. zachary97

    98 k1500 Hesitation

    zachary97, May 28, 2020 at 10:34 PM ... 2
    Replies:
    10
    Views:
    132
    kennythewelder
    May 29, 2020 at 3:16 PM
  13. Brandon_

    98 5.0L stumbling under loads

    Brandon_, May 26, 2020 at 3:56 PM
    Replies:
    9
    Views:
    147
    Schurkey
    May 29, 2020 at 12:59 PM
  14. FusionX

    Stiff gas pedal?

    FusionX, Apr 27, 2015
    Replies:
    7
    Views:
    2,103
    someotherguy
    May 29, 2020 at 9:04 AM
  15. CHEVYS4ME

    Need advice on replacement engine: VCM5RC 4 Bolt Roller Cam

    CHEVYS4ME, May 13, 2020 ... 3 4 5
    Replies:
    45
    Views:
    1,049
    CHEVYS4ME
    May 28, 2020 at 11:32 PM
Showing threads 1 to 15 of 8,262

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