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87 exhaust system

Discussion in 'Chevy Trucks' started by garjus, Jun 9, 2004.

  1. garjus

    garjus Junior Member
    Messages: 2

    I have a question regarding my exhaust system. The pipe between the converter and the muffler broke in half and I am now running off just the converter. Can I cut the pipe in front of the converter and go from there back? Also I would like to find a diagram showing how the exhaust should be. Any help would be appreciated. thanks
  2. KentuckyPlow

    KentuckyPlow Member
    Messages: 64

    Any parts store should have a picture of the exhaust routing. ANd yes you can go straight through bypassing the converter, but this is illegal, and will not pass emissions tests.
  3. wfd44

    wfd44 Senior Member
    from Maine
    Messages: 369

    An '87 chevy is fuel injected. bypassing the cat may also bypass the O2 sensor or at least feed it anomalous readings thus freaking out the TBI computer.
  4. Makndust

    Makndust Senior Member
    Messages: 324

    Duals on my 87

    When I bought my truck (I'm the 3rd owner). It was without the converter anyway. I just put 2 1/2" dual exhaus with a crossover pipe on. The mufflers are 26" glass packs. Sounds great behind the 454 under the hood. After I run it for a while the check engine light will come on. This started after we put in the new GM Goodwrench motor in. I do think that it is an emmissions issue but have been told by my shop manager that it is nothing to worry about.