Truckers Report Jobs

Find Trucking Jobs

Company Driver Company Driver Dry Van Dry Van Flatbed Flatbed Refrigerated Refrigerated Specialized Specialized Owner Operator Owner Operator
More Trucking Job Searches ⌄ Fewer Trucking Job Searches
⌃

exhaust swap question

Discussion in 'Peterbilt Forum' started by jbstransport, Jan 8, 2015.

  1. Jan 8, 2015 #1
    jbstransport

    jbstransport Bobtail Member

    2
    0
    Jan 3, 2014
    0
    I have a 2004 peterbit 387. It has 3 mufflers 2 behind sleeper and 1 under cab. This is a bridge cat motor. Has anyone ever replaced muffler under cab with a straight pipe? Does it cause any issues? Also the two mufflers behind the sleeper are very expensive @$550 a piece. Anyone ever swapped them out for regular mufflers?? Any thought ???
     
    jbstransport, Jan 8, 2015
    jbstransport, Jan 8, 2015
    #1
  2. Truckers Report Jobs

    Trucking Jobs in 30 seconds

    Every month 400 people find a job with the help of TruckersReport.

  3. Jan 8, 2015 #2
    QUALITYTRUCK

    QUALITYTRUCK Road Train Member

    1,780
    1,726
    Jun 14, 2009
    romulus,mi
    0
    You can straight pipe under cab in place of catalytic converter.You will like results of better breathing engine.You can't tell at first by naked eye,but mufflers behind cab are not standard size (body diameter smaller)Pete dealer in Detroit sells for $200 apiece.good luck.
     
    QUALITYTRUCK, Jan 8, 2015
    QUALITYTRUCK, Jan 8, 2015
    #2
  4. Jan 8, 2015 #3
    jbstransport

    jbstransport Bobtail Member

    2
    0
    Jan 3, 2014
    0
    Thanks. Yes I knew that they were a different diameter. But what makes them more expensive. I use to own a 379 and replacement mufflers for them were about $70.
     
    jbstransport, Jan 8, 2015
    jbstransport, Jan 8, 2015
    #3
  5. Feb 13, 2015 #4
    peterbilt_2005

    peterbilt_2005 Medium Rare

    3,906
    29,188
    May 4, 2013
    Commie-fornia come visit we have C. A. R. B
    0
    Shop around. I just purchased a stack muffler for $58. At Pete dealer. What you might get quotes from. Is the piping from cat up. That is the costly parts. Mufflers are cheap.
     
    peterbilt_2005, Feb 13, 2015
    peterbilt_2005, Feb 13, 2015
    #4
  • Truckers Report Jobs

    Trucking Jobs in 30 seconds

    Every month 400 people find a job with the help of TruckersReport.