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Thread: 98 Sierra 5.3 exhaust options? Pics needed!

  1. #1
    Join Date
    Mar 2014
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    16

    98 Sierra 5.3 exhaust options? Pics needed!

    Just drove my 98 Sierra OBS swapped 5.3 for the first time last night. Wanting to know what you guys have done for exhaust. Right now I have Schoenfeld full length headers and thats it, not leaving it that way. Will run high flow cats after the headers, trying to keep it somewhat emissions legal, but what have you guys done from there? Want it to have some rumble but not obnoxious, true duals with same side exit, maybe something like 2nd gen Lightning style?

    BTW, I do have a cam swap already planned...

  2. #2
    Join Date
    Jan 2014
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    Las Cruces NM
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    I did true dual mandrel bent 3" all the way back with an h-pipe through magnaflows. It's a little loud but no drone on the highway at all.
    97 RCSB . 2WD . 5.3 . 4l60E . E-FANS . PNP 706s . TSP 228R . 3600 STALL . HD2 . VETTE SERVO . 3.73s . 2" DROP
    TURBO IN THE WORKS

  3. #3
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    Mar 2014
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    Any loss of torque going all the way out the back with 3"?

  4. #4
    Join Date
    Jan 2014
    Location
    Las Cruces NM
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    209
    Not at all. This thing has really good low and mid range.
    97 RCSB . 2WD . 5.3 . 4l60E . E-FANS . PNP 706s . TSP 228R . 3600 STALL . HD2 . VETTE SERVO . 3.73s . 2" DROP
    TURBO IN THE WORKS

  5. #5
    Join Date
    Mar 2014
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    Good to know, no loss of torque. Was yours a kit from the cat back or did a shop put it together?

  6. #6
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    Jan 2014
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    Las Cruces NM
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    I built it myself
    97 RCSB . 2WD . 5.3 . 4l60E . E-FANS . PNP 706s . TSP 228R . 3600 STALL . HD2 . VETTE SERVO . 3.73s . 2" DROP
    TURBO IN THE WORKS

  7. #7
    Join Date
    Mar 2014
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    16
    Nice!

  8. #8
    I built mine as well. I also did dual 3" with an H pipe using mandrel bends. Its 14" x 4" x 9" Magnaflows, I have turndowns on it as of now but they are not pictured. Here's a few pics.


    Last edited by ChevyMan90; 08-14-2014 at 05:56 PM.

  9. #9
    Join Date
    Jan 2014
    Location
    Las Cruces NM
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    That's almost mine exactly
    97 RCSB . 2WD . 5.3 . 4l60E . E-FANS . PNP 706s . TSP 228R . 3600 STALL . HD2 . VETTE SERVO . 3.73s . 2" DROP
    TURBO IN THE WORKS

  10. #10
    I think I remember you saying that in my build thread. I am considering adding tailpipes to mine eventually but it sounds great now.
    1999 Chevrolet C1500 2WD
    LQ9 6.0 . PRC LS6 Heads . TR 227/239 Cam . TBSS Intake . LT Headers . 3.73 . TruTrac . E-Fans . Built 4L60E . PI 4000 Stall

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