GM Truck Club
THE PREMIER CHEVY TRUCK & SUV FORUM
Founded in 2004 ~ We're the #1 Chevy Truck & SUV Forum.
Silverado & Sierra | Tahoe & Yukon | Suburban & Yukon XL | SUV & CROSSOVER
Page 1 of 2 12 LastLast
Results 1 to 10 of 11
  1. #1
    Jr. Apprentice
    Join Date
    Mar 2010
    Location
    Thornton CO
    Posts
    14

    Default 1988 C3500 catalytic converter

    Hello all. I recently purchased an 88 c3500 dually with a 7.4 litre engine. I am looking for information about when GM started putting catalytic converters on these engines because my truck doesn't have one. Thanks for any info you can give me.
    Last edited by Brandont; 12-26-2010 at 08:30 PM.
    BrandonT
    Thornton CO.
    1999 YUKON DENALI

  2. #2

    Default

    I THINK back in '88 the 1-tons weren't required to have them.... I THINK.

  3. #3
    Jr. Apprentice
    Join Date
    Mar 2010
    Location
    Thornton CO
    Posts
    14

    Default

    Man I hope so. Thanks
    BrandonT
    Thornton CO.
    1999 YUKON DENALI

  4. #4

    Default

    Try calling your local GM parts department and see if they came with one. If they did have one just buy a aftermarket cat, ALOT less money than a GM replacement. Check Magnaflows website for there replacement cats.

  5. #5

    Default

    High flow cats FTW
    04 ECSB Custom silver & grey, Soft 8's, BFG KO's, ReadyLift Leveling Kit, Hellwig front sway bar, K&N filter, DeeZee EZ-Down, Rhino liner, Alpine CDE103BT, Rockford 6.5's, 12" V.A.T. Hammer Pro in a Subthump box, Alpine PowerPack amp, Hifonics amp, BackRack w/ 55w 5000k HID KC Daylighters, KC light bar with 4 KC Slimlites, UWS toolbox, Shaved Antenna mod, Black Bowtie, LED backup, license plate, dome lights & 3rd brake light


  6. #6
    Legend
    stephan's Avatar
    Join Date
    Sep 2010
    Location
    Far West, Oregon USA,
    Posts
    8,606
    Blog Entries
    1

    Default

    Brandon, If your C-3500 wasn't built for sale in Cali, it would not have the cat in '88
    I live near enough to the Cali border, that we get a lot of their used trucks/cars up here & unfortunately my '88 1 ton was a Cali used truck & it did have one when I bought it.
    1988 Chevy C-3500 2wd (no pic)
    350 c.i. 5.7 L Stock Block, 4 Bolt Mains
    L-31 Vortec Heads, Edelbrock Cam & Intake,
    Holley 650, Flowtech Headers, Magnaflow exh.
    Jet Trans 700R4, B&M Ratchet, 4:10 gears,
    3" susp. lift kit "shadetree"
    No rev limiter, No speed limiter lol


  7. #7
    Jr. Apprentice
    Join Date
    Mar 2010
    Location
    Thornton CO
    Posts
    14

    Default

    Thanks for the info. I guess I will take the truck to the emissions place and see what they say. I live in Colorado so it shouldn't have to meet California specs. I will post some pics of the work truck soon.
    BrandonT
    Thornton CO.
    1999 YUKON DENALI

  8. #8
    Jr. Apprentice
    Join Date
    Mar 2010
    Location
    Thornton CO
    Posts
    14

    Default

    Does anyone else have any input?
    BrandonT
    Thornton CO.
    1999 YUKON DENALI

  9. #9
    Legend
    stephan's Avatar
    Join Date
    Sep 2010
    Location
    Far West, Oregon USA,
    Posts
    8,606
    Blog Entries
    1

    Default

    Hey Brandon, you might try pluging your vin number in at this site & see what it says. I don't guarantee it's accurate or if it will even recognize your vin cuz it doesn't accept mine.I tried it twice & it told me mine wasn't entered into their database yet,... like they were thinking my '88 was too new or something lol

    http://www.compnine.com/vid.php


    1988 Chevy C-3500 2wd (no pic)
    350 c.i. 5.7 L Stock Block, 4 Bolt Mains
    L-31 Vortec Heads, Edelbrock Cam & Intake,
    Holley 650, Flowtech Headers, Magnaflow exh.
    Jet Trans 700R4, B&M Ratchet, 4:10 gears,
    3" susp. lift kit "shadetree"
    No rev limiter, No speed limiter lol


  10. #10
    Jr. Apprentice
    Join Date
    Mar 2010
    Location
    Thornton CO
    Posts
    14

    Default

    Hey Stephan, I tried it and vin not in the database. Thank you for the suggestion.
    BrandonT
    Thornton CO.
    1999 YUKON DENALI

Page 1 of 2 12 LastLast

Similar Threads

  1. Catalytic Converter Help
    By AL3X in forum GM Powertrain
    Replies: 4
    Last Post: 07-31-2010, 02:51 PM
  2. catalytic converter
    By kbhawaii in forum General Chevy & GM Tech Questions
    Replies: 3
    Last Post: 05-30-2010, 12:47 PM
  3. removing catalytic converter
    By boatman2089 in forum GM Powertrain
    Replies: 4
    Last Post: 12-08-2009, 04:36 PM
  4. catalytic converter
    By cascott325 in forum General Chevy & GM Tech Questions
    Replies: 13
    Last Post: 12-17-2008, 08:08 AM
  5. Catalytic Converter, Topper
    By MXZ1983 in forum General Classifieds
    Replies: 0
    Last Post: 11-10-2008, 08:03 PM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •