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!
    682
    Discussions
    8,051
    Messages
    Latest: 1997 Tahoe BBP tuned PCM? trx125, Feb 23, 2019 at 12:28 AM

  2. LSX + Carb Swaps

    This section is for info on LSX or carburetor swaps into the OBS trucks.
    360
    Discussions
    4,809
    Messages
    Latest: Need wiring help with ls swap Ls swap c1500, Feb 21, 2019 at 7:28 PM

  3. Exhaust

    Anything exhaust - from headers cats and pipes to tips.
    777
    Discussions
    9,424
    Messages
    Latest: Catalytic Converter & O2 Sensor? R422b, Feb 22, 2019 at 10:21 PM
Page 1 of 482
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  1. Bighead38

    Putting A Chip In A TBI Truck

    Bighead38, Dec 3, 2009 ... 12 13 14
    Replies:
    137
    Views:
    129,651
    PlayingWithTBI
    Jan 31, 2019
  2. monstar_est87

    How to MarkVIII your OBS on a budget..!

    monstar_est87, Apr 30, 2012 ... 14 15 16
    Replies:
    156
    Views:
    82,464
    Supercharged111
    Jan 28, 2019
  3. Ginger

    Intake Gasket Replacement

    Ginger, Dec 4, 2009 ... 7 8 9
    Replies:
    86
    Views:
    52,993
    Markus
    Jan 23, 2019
  4. Greg

    Maintenance: RPO Code Database & Decoder

    Greg, Dec 4, 2009 ... 2 3
    Replies:
    22
    Views:
    18,208
    Kyle89
    Dec 30, 2018
  5. Mike

    The Stupid Engine Questions Thread

    Mike, Dec 3, 2009 ... 106 107 108
    Replies:
    1,072
    Views:
    145,343
    Lionel
    Dec 18, 2018
  6. shelbyt.67

    ULTIMATE TBI mods stage 1

    shelbyt.67, Jun 28, 2012 ... 23 24 25
    Replies:
    245
    Views:
    178,673
    92GMCK2500
    Nov 21, 2018
  7. Ginger

    Water Pump Relacement

    Ginger, Dec 4, 2009 ... 5 6 7
    Replies:
    67
    Views:
    35,806
    Jared Jackson
    Aug 28, 2018
  8. Hodges87

    How to Replace oil filter adapter gasket & o-ring

    Hodges87, Dec 14, 2009 ... 3 4 5
    Replies:
    46
    Views:
    96,622
    Chevy blood
    Aug 16, 2018
  9. supjim12

    Tune Up Parts Numbers

    supjim12, Dec 22, 2009 ... 2 3 4
    Replies:
    33
    Views:
    27,021
    Schurkey
    Jul 20, 2018
  10. Greg

    GMT400 History

    Greg, Mar 16, 2010 ... 18 19 20
    Replies:
    199
    Views:
    170,792
    ThundahBeagle
    Nov 26, 2017
  11. Devs93

    The Ultimate 88-98 Performance Toolbox

    Devs93, Aug 1, 2012 ... 2 3
    Replies:
    25
    Views:
    111,642
    superdave
    Jul 27, 2017
  12. Mike

    LS Swapping and Performance FAQ

    Mike, Aug 3, 2013
    Replies:
    9
    Views:
    15,175
    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:
    38,812
    txgp17
    Oct 24, 2013
  1. DTrain

    8.1 Converstion

    DTrain, Sep 21, 2018 ... 3 4 5
    Replies:
    40
    Views:
    2,737
    L31MaxExpress
    Feb 23, 2019 at 12:18 AM
  2. ht89

    TBI heads on 5.7 Vortec short block

    ht89, Feb 13, 2019 ... 2 3
    Replies:
    26
    Views:
    1,198
    ht89
    Feb 22, 2019 at 10:40 PM
  3. DTrain

    454 Throttle Body

    DTrain, Feb 22, 2019 at 7:40 AM
    Replies:
    7
    Views:
    138
    Supercharged111
    Feb 22, 2019 at 9:21 PM
  4. Daniel Brown

    1996 5.0/5.7 vortec question

    Daniel Brown, Feb 21, 2019 at 11:12 PM
    Replies:
    2
    Views:
    66
    Daniel Brown
    Feb 22, 2019 at 8:27 PM
  5. c1500deathtrap

    LS firing order on Gen 1

    c1500deathtrap, Feb 19, 2019 at 6:04 PM
    Replies:
    8
    Views:
    168
    884x4310ci
    Feb 22, 2019 at 6:28 PM
  6. 454cid

    Starter troubles and replacement

    454cid, Feb 18, 2019 at 1:36 AM ... 2 3
    Replies:
    29
    Views:
    508
    454cid
    Feb 22, 2019 at 3:59 PM
  7. 7echo

    timing chain and distributor

    7echo, Feb 21, 2019 at 11:21 PM
    Replies:
    4
    Views:
    105
    upper_tanker
    Feb 22, 2019 at 3:55 PM
  8. 92GMCK2500

    Radiator Upgrade - Recommendations?

    92GMCK2500, Feb 14, 2019 ... 2 3
    Replies:
    21
    Views:
    819
    88monteSS
    Feb 22, 2019 at 12:44 PM
  9. skychair

    99 yukon 5.7 run wire to engine

    skychair, Feb 22, 2019 at 12:08 PM
    Replies:
    0
    Views:
    36
    skychair
    Feb 22, 2019 at 12:08 PM
  10. WVBearcub

    need for grounds?, help please

    WVBearcub, Feb 16, 2019 ... 2 3
    Replies:
    24
    Views:
    699
    Gavin
    Feb 22, 2019 at 12:41 AM
  11. hatzie

    88-95 Service Manuals

    hatzie, Dec 15, 2018 ... 2
    Replies:
    12
    Views:
    1,220
    PlayingWithTBI
    Feb 21, 2019 at 9:54 PM
  12. jkeaton

    Weird check gauges/transmission issue

    jkeaton, Feb 20, 2019 at 4:47 PM
    Replies:
    3
    Views:
    146
    Schurkey
    Feb 21, 2019 at 6:48 PM
  13. Slime

    5.7 Starting Issue

    Slime, Dec 26, 2018 ... 2
    Replies:
    11
    Views:
    774
    Slime
    Feb 21, 2019 at 5:17 PM
  14. Andrew Gaskins

    Air Conditioner and Heater

    Andrew Gaskins, Feb 21, 2019 at 12:18 PM
    Replies:
    2
    Views:
    136
    east302
    Feb 21, 2019 at 2:39 PM
  15. skychair

    E-fan on/off switch and indicator light

    skychair, Feb 19, 2019 at 12:56 PM
    Replies:
    9
    Views:
    241
    Supercharged111
    Feb 21, 2019 at 10:15 AM
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