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!
    707
    Discussions
    8,327
    Messages
    Latest: Vortec heads and TBI? 98 Nitro, Jun 25, 2019 at 12:54 AM

  2. LSX + Carb Swaps

    This section is for info on LSX or carburetor swaps into the OBS trucks.
    375
    Discussions
    4,939
    Messages
    Latest: LS to 96+ wiring info Clutch1819, Jun 23, 2019 at 8:03 PM

  3. Exhaust

    Anything exhaust - from headers cats and pipes to tips.
    791
    Discussions
    9,499
    Messages
    Latest: Vortec 4x4 headers!? Supercharged111, Jun 19, 2019 at 5:57 PM
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Page 1 of 498
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  1. Ginger

    Water Pump Relacement

    Ginger, Dec 4, 2009 ... 5 6 7
    Replies:
    68
    Views:
    40,448
    Trigger_guard
    Jun 21, 2019 at 7:14 AM
  2. Mike

    The Stupid Engine Questions Thread

    Mike, Dec 3, 2009 ... 108 109 110
    Replies:
    1,092
    Views:
    155,049
    1997
    Jun 20, 2019 at 3:16 PM
  3. Bighead38

    Putting A Chip In A TBI Truck

    Bighead38, Dec 3, 2009 ... 15 16 17
    Replies:
    167
    Views:
    142,702
    884x4310ci
    May 2, 2019
  4. Devs93

    The Ultimate 88-98 Performance Toolbox

    Devs93, Aug 1, 2012 ... 2 3
    Replies:
    26
    Views:
    121,232
    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:
    89,535
    Supercharged111
    Jan 28, 2019
  6. Ginger

    Intake Gasket Replacement

    Ginger, Dec 4, 2009 ... 7 8 9
    Replies:
    86
    Views:
    58,597
    Markus
    Jan 23, 2019
  7. Greg

    Maintenance: RPO Code Database & Decoder

    Greg, Dec 4, 2009 ... 2 3
    Replies:
    22
    Views:
    21,460
    Kyle89
    Dec 30, 2018
  8. shelbyt.67

    ULTIMATE TBI mods stage 1

    shelbyt.67, Jun 28, 2012 ... 23 24 25
    Replies:
    245
    Views:
    190,016
    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:
    102,933
    Chevy blood
    Aug 16, 2018
  10. supjim12

    Tune Up Parts Numbers

    supjim12, Dec 22, 2009 ... 2 3 4
    Replies:
    33
    Views:
    31,352
    Schurkey
    Jul 20, 2018
  11. Greg

    GMT400 History

    Greg, Mar 16, 2010 ... 18 19 20
    Replies:
    199
    Views:
    183,503
    ThundahBeagle
    Nov 26, 2017
  12. Mike

    LS Swapping and Performance FAQ

    Mike, Aug 3, 2013
    Replies:
    9
    Views:
    17,060
    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:
    42,773
    txgp17
    Oct 24, 2013
  1. Shane Dyer

    At my wits end.. Looking for any idea.

    Shane Dyer, Jun 6, 2019 ... 8 9 10
    Replies:
    95
    Views:
    4,526
    evilunclegrimace
    Jun 25, 2019 at 6:13 AM
  2. Schurkey

    1997 7.4L Starter solenoid S-terminal "purple" wire repair

    Schurkey, Jun 24, 2019 at 1:57 AM
    Replies:
    1
    Views:
    91
    Schurkey
    Jun 25, 2019 at 4:50 AM
  3. 92GMC

    95 350 tbi factory oil pressure specs??? advice to help oil pressure?

    92GMC, May 25, 2011 ... 2
    Replies:
    18
    Views:
    34,257
    Schurkey
    Jun 25, 2019 at 4:46 AM
  4. Gramps

    Mufflers - choices choices......

    Gramps, Jun 19, 2019 at 2:08 AM
    Replies:
    9
    Views:
    346
    Gramps
    Jun 25, 2019 at 1:30 AM
  5. rdomeck

    1999 7.4 Low sensor voltage P1122 P0122

    rdomeck, Jun 3, 2019 ... 2 3
    Replies:
    25
    Views:
    751
    rdomeck
    Jun 24, 2019 at 10:51 PM
  6. Darrell

    TBI problem, Truck won't stay running

    Darrell, Jun 12, 2019 ... 2 3 4
    Replies:
    39
    Views:
    1,517
    Schurkey
    Jun 24, 2019 at 10:45 PM
  7. Big dreams

    96 5.7 problems

    Big dreams, Jun 13, 2019
    Replies:
    7
    Views:
    369
    Big dreams
    Jun 24, 2019 at 6:12 PM
  8. bugdewde

    '95 7.4L Oil filter removal clearance issue

    bugdewde, Jun 21, 2019 at 6:52 AM ... 2
    Replies:
    11
    Views:
    337
    Hipster
    Jun 24, 2019 at 4:46 PM
  9. Gary Mettus

    A/C Compressor Oil Spatter

    Gary Mettus, Jun 21, 2019 at 2:19 PM
    Replies:
    6
    Views:
    245
    Schurkey
    Jun 24, 2019 at 3:30 PM
  10. guyf2000

    91 C2500 fuel pump replacement notes

    guyf2000, Jun 22, 2019 at 6:52 PM
    Replies:
    9
    Views:
    231
    guyf2000
    Jun 23, 2019 at 11:20 PM
  11. thesameguy

    P30 454 TBI - Code 44

    thesameguy, Jun 22, 2019 at 6:27 PM
    Replies:
    3
    Views:
    161
    thesameguy
    Jun 23, 2019 at 5:17 PM
  12. cjmspartans

    Loose gear box

    cjmspartans, Jun 20, 2019 at 8:24 PM
    Replies:
    8
    Views:
    304
    sewlow
    Jun 23, 2019 at 12:54 PM
  13. 98Bacon

    Fluids for new GM L31

    98Bacon, Jun 20, 2019 at 8:33 PM ... 2
    Replies:
    11
    Views:
    358
    big_mike
    Jun 23, 2019 at 11:18 AM
  14. makindust2@aol.com

    Edelbrock pro flow 4 Efi

    [email protected], Jun 17, 2019 ... 2
    Replies:
    12
    Views:
    697
    c1500deathtrap
    Jun 23, 2019 at 9:26 AM
  15. Clutch1819

    Skip problem

    Clutch1819, Jun 6, 2019
    Replies:
    6
    Views:
    292
    Supercharged111
    Jun 22, 2019 at 11:55 PM
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