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Forum: Engine Performance + Maintenance

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

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  1. LSX + Carb Swaps

    This section is for info on LSX or carburetor swaps into the OBS trucks.

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    • Threads: 15
    • Posts: 269

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  2. Exhaust

    Anything exhaust - from headers cats and pipes to tips.

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    • Threads: 38
    • Posts: 575

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  1.   Sticky Threads  

  2. Lightbulb Sticky Thread Sticky: The Stupid Engine Questions Thread

    Post here if you have a simple question. This will help keep track of common info and reduce clutter.

    Started by Mike, 12-03-2009 01:07 AM
    2 Pages •
    1 2
    • Replies: 13
    • Views: 597
    Aloicious
    Yesterday 01:36 AM Go to last post

  3. Sticky Thread Sticky: Intake Gasket Replacement

    Written by kawamatt2 Well after 100,000 miles and seeing some wierd antifreeze like build-up on the inside of my oil fill tube i figured it was...

    Started by Ginger, 12-04-2009 09:27 AM
    2 Pages •
    1 2
    • Replies: 11
    • Views: 540
    Jim's 72
    09-01-2010 12:46 PM Go to last post

  4. Sticky Thread Sticky: GMT400 History

    Here is my condensed history of the 88-98 GMT400 trucks. This is a basic history of the C/K line of trucks. I posted this in the engine performance +...

    Started by Greg, 03-16-2010 03:13 AM
    5 Pages •
    1 2 3 4 5
    • Replies: 44
    • Views: 1,554
    1badgmc
    08-23-2010 09:27 PM Go to last post

  5. Sticky Thread Sticky: Water Pump Relacement

    Written up by Kawamatt2 Here we go again fellas. 107K miles and the stock water pump on my 98' SBC 350 decided to retire. Was getting some...

    Started by Ginger, 12-04-2009 09:31 AM
    2 Pages •
    1 2
    • Replies: 11
    • Views: 353
    Z Fury
    08-21-2010 07:58 PM Go to last post

  6. Sticky Thread Sticky: How to get Coil per Cylinder and LSx ignition control on a L31 SBC Write up

    Well, it’s another slow day here at work, so what say we do another write up? What I’ll discuss today is something that not many people have done, or...

    Started by Aloicious, 07-28-2010 05:20 AM
    2 Pages •
    1 2
    • Replies: 12
    • Views: 215
    Aloicious
    08-03-2010 06:14 PM Go to last post

  7. Sticky Thread Sticky: Tune up parts 96-99

    This is for those who own the OBS VORTEC series engines. Included is the 4.3, 5.0, 5.7, and 7.4liters 4.3L 262 CUBIC INCH ENGINES, 5.0L 305 CUBIC...

    Started by supjim12, 12-24-2009 09:05 PM
    • Replies: 5
    • Views: 504
    ts96
    06-21-2010 06:34 PM Go to last post

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

    Ever since I have owned my 88, I have despised the engine oil filter. Not only is it small, but it's at a rediculous angle that makes installing and...

    Started by 88GMCtruck, 04-14-2010 06:29 PM
    • Replies: 6
    • Views: 444
    88GMCtruck
    05-21-2010 10:38 AM Go to last post

  9. Sticky Thread Sticky: How to Replace oil filter adapter gasket & o-ring

    How to: Replace your Oil cooler adapter gasket & o-rings If your Oil cooler adapter is leaking like the one above don't worry its simple fix. ...

    Started by Hodges87, 12-14-2009 07:34 AM
    • Replies: 8
    • Views: 656
    Swims350
    04-19-2010 02:42 PM Go to last post

  10. Sticky Thread Sticky: Putting A Chip In A TBI Truck

    What are performance chips and how do they work? Performance chips are essentially a memory chip that contains a set of instructions that tells your...

    Started by Bighead38, 12-03-2009 09:38 AM
    2 Pages •
    1 2
    chip, tbi
    • Replies: 10
    • Views: 1,074
    88GMCtruck
    04-16-2010 11:33 AM Go to last post

  11. Sticky Thread Sticky: Tune up info with parts numbers

    This will include AC/Delco part numbers first, Fram the next. as these are the most popular/typical brands out there. If anyone has any other part...

    Started by supjim12, 12-22-2009 10:52 PM
    • Replies: 0
    • Views: 199
    supjim12
    12-22-2009 10:52 PM Go to last post

  12. Sticky Thread Sticky: Maintenance: RPO Code Database & Decoder

    RPO Code PDF File (http://aplsweb.com/Topics/TopicPix/RPO.pdf) RPO Decoder (http://lonestarthunder.com/m_rpo.php) Straight-forward gear/axle...

    Started by Greg, 12-04-2009 01:16 PM
    • Replies: 0
    • Views: 223
    Greg
    12-04-2009 01:16 PM Go to last post

  13.   Normal Threads  

  1. cummins powered crew cab chevy.

    Figured i'd start a build thread now that i have a little something to show. my truck had a 6.5l turbo in it with 206k on it. the accelerator pedal...

    Started by domepiece, 08-23-2010 07:57 PM
    • Replies: 9
    • Views: 155
    DRAGGIN95
    Today 12:00 PM Go to last post

  2. 97 5.7 miss fire code on #1 HELP

    I am new here Hi everyone. First the truck start it miss and get worse over a short time. Changed cap rotor plugs wire. Then one morning it started...

    Started by shock, Today 10:09 AM
    • Replies: 0
    • Views: 6
    shock
    Today 10:09 AM Go to last post

  3. first post: 94 suburban no power to fuel pump fuse and relay not clicking

    Hey guys new here and i got some crappy wiring diagrams that don't show me where the fuse is in relation to the relay. Can anyone tell me if the fuse...

    Started by bldgengineer, Yesterday 08:39 PM
    • Replies: 3
    • Views: 24
    BHBurban
    Today 09:58 AM Go to last post

  4. 5.7L Vortec Injector housing and Manifold

    5.7L Vortec SFI Hello everyone, I am new to this forum and have a simple (but probably stupid) question. Problem: Few days ago my truck...

    Started by UrbanOffroad215, 08-16-2010 06:00 PM
    2 Pages •
    1 2
    • Replies: 11
    • Views: 197
    shock
    Today 09:45 AM Go to last post

  5. what are some signs of a cracked head or valve issues?

    I got a question for all of you out there... what are some signs of a head with a crack in it or maybe burnt valve, bent valve, too tight, too loose....

    Started by Swims350, Yesterday 10:34 PM
    • Replies: 2
    • Views: 25
    Swims350
    Today 09:38 AM Go to last post

  6. carbed to tbi 454

    Ok guys I posted a couple weeks ago about swapping a 350 into my dads 95 3500 2wd dually with a blown 454. I have a 71 chevy with a 454 and a guy...

    Started by 93zierra, 09-01-2010 01:07 AM
    • Replies: 4
    • Views: 35
    Bad91Bowtie
    Today 03:54 AM Go to last post

  7. Can I remove this without any ill effects?

    When I replaced all my rotted out brake lines with all new stainless I discovered that I had a fuel line that ran from the tank to this was...

    Started by bizzo15, 08-29-2010 06:21 PM
    2 Pages •
    1 2
    • Replies: 17
    • Views: 195
    Swims350
    Yesterday 05:39 PM Go to last post

  8. 1995 TBI 350 EGR Solenoid Question

    Just noticed that only the bottom port on the left side has a vac line attached and was wondering should the upper port on the left side also have a...

    Started by Bigg G, 09-02-2010 09:23 PM
    • Replies: 3
    • Views: 44
    94 Silverado
    09-03-2010 05:25 PM Go to last post

  9. truck not burning gas fast enough

    my truck is dumping to much gas and it doesnt burn it fast enough so what could be the problem

    Started by chevyon22s, 09-02-2010 07:40 PM
    2 Pages •
    1 2
    • Replies: 10
    • Views: 98
    1990GMCSIERRA
    09-03-2010 10:31 AM Go to last post

  10. PO420 code

    Anyone ever have the PO420 code on their 1996 chevy truck ? If so how did you fix it ?

    Started by EMT96, 08-30-2010 07:26 PM
    • Replies: 6
    • Views: 57
    1990GMCSIERRA
    09-03-2010 01:04 AM Go to last post

  11. Poll Poll: TBI or Carb? What Do You prefer?

    well as it says. which do u prefer and why? i my self like the tbi setup but i kno theres some old skool guys that prefer carbs

    Started by 1990GMCSIERRA, 08-20-2010 01:24 PM
    4 Pages •
    1 2 3 4
    • Replies: 32
    • Views: 374
    1990GMCSIERRA
    09-03-2010 01:00 AM Go to last post

  12. ECM-I 20A blown

    What would cause the ECM-I Fuse to keep blowing? Everytime i turn the ignition to the Start position the fuse blows. What should i be looking for and...

    Started by Ol'Rover, 08-31-2010 06:21 PM
    • Replies: 8
    • Views: 67
    Ol'Rover
    09-02-2010 12:37 PM Go to last post

  13. Nitrous Solenoids Locations

    Hi I was just wondering if anyone has some pictures of where they mounted nitrous solenoids? My directions say to mount them on these cheep brackets...

    Started by asolek88, 09-02-2010 11:25 AM
    • Replies: 0
    • Views: 18
    asolek88
    09-02-2010 11:25 AM Go to last post

  14. Why can't i do this????

    This came to me while i was wrenching the gas tank off a junkyard truck. Why can't i put a fuel pump right in the frame and run a line to the tbi and...

    Started by barebones 1500, 09-01-2010 07:41 PM
    • Replies: 6
    • Views: 97
    daddy_dandy
    09-02-2010 08:51 AM Go to last post

  15. Ok I Need Help

    alright when i punch it itl cock sideways and take off spinnin then all of a sudden cut out for a sec then take off again like a bat outa hell idk...

    Started by 1990GMCSIERRA, 08-24-2010 11:28 PM
    3 Pages •
    1 2 3
    • Replies: 25
    • Views: 262
    1990GMCSIERRA
    09-01-2010 03:34 PM Go to last post

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