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Thread: exhaust question

  1. #1
    Join Date
    Mar 2006
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    Houston
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    im fixin to order imco exhuast for my truck...but it offer to inlet sizes 2 1/2" or 3" size not sure which one is mine....and i dont want to go crawl under there right now lol...


    2001 seirra 5.3L ex cab.-- 93 performance Nelson Tune,longtube pacesetter headers, ory, magnaflow with electric cut out, airaid cai, throttle body spacer, clear corners, 1400 watt system, 2 ifinity tens custom boxes, panasonic head unit, punch grill....sold :-(
    09 camry se v6....gotta have a gas saver while in college...still gets up and goes tho

  2. #2
    DBYRD Guest
    <div class='quotetop'>QUOTE(blackout00 &#064; Oct 8 2006, 11&#58;15 PM) [snapback]68474[/snapback]</div>
    im fixin to order imco exhuast for my truck...but it offer to inlet sizes 2 1/2" or 3" size not sure which one is mine....and i dont want to go crawl under there right now lol...
    [/b]
    stock? should be 2 and a half - STOCK, im goin 3 all the way out, doin it right the first time&#33;

  3. #3
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    Feb 2004
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    Sour Lake Tx
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    I wouldnt go bigger than 2.5" if your gonna dual it out. It depends on where and how you want your exhaust to exit. If you have a 5.3 dont go bigger than 2.5" for duals and 2.75" for single turn downs or you will kill your low end torque a bit and help the top end. 2.5" is pretty much the norm for a small block and you only need to go bigger if your making like 500+ hp. I have a 6.0 with true dual 2.5" and its on the big side for the mods i have. You need to take into consideration what kind of sound you want, DB level, and what mods you will be doing in the future, since from your sig you seem to like listening to music more than the sound of your truck, i would say 40 series flow with dual 2.5" outlets, if your gonna dual it all the way out. If you want turndowns, i would stayaway from the 40 series and go with a single in single out 3" muffler and a turn down as far away from the cab as possible. I would try a magnaflow but thats just my preference. You need to tell where you want it to exit and how loud you want it.
    EATIN' FORDS AND TUNDRAS

    RIP 2005 VHO ecsb 6.0HO, Comp Cam, Nelson Tune, OBX LT's.

  4. #4
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    <div class='quotetop'>QUOTE(badseed91 &#064; Oct 9 2006, 11&#58;29 AM) [snapback]68514[/snapback]</div>
    I wouldnt go bigger than 2.5" if your gonna dual it out. It depends on where and how you want your exhaust to exit. If you have a 5.3 dont go bigger than 2.5" for duals and 2.75" for single turn downs or you will kill your low end torque a bit and help the top end. 2.5" is pretty much the norm for a small block and you only need to go bigger if your making like 500+ hp. I have a 6.0 with true dual 2.5" and its on the big side for the mods i have. You need to take into consideration what kind of sound you want, DB level, and what mods you will be doing in the future, since from your sig you seem to like listening to music more than the sound of your truck, i would say 40 series flow with dual 2.5" outlets, if your gonna dual it all the way out. If you want turndowns, i would stayaway from the 40 series and go with a single in single out 3" muffler and a turn down as far away from the cab as possible. I would try a magnaflow but thats just my preference. You need to tell where you want it to exit and how loud you want it.
    [/b]
    i have 40 series dumped right now not loud at all....my friend has imco and i like it....its the imco extreme but it comes in to sizes 2 1/2 and 3 im gonna get single in dual out....and just dump it in front of axle....so i guess im just gonna order the 2 1/2.....thanks man


    2001 seirra 5.3L ex cab.-- 93 performance Nelson Tune,longtube pacesetter headers, ory, magnaflow with electric cut out, airaid cai, throttle body spacer, clear corners, 1400 watt system, 2 ifinity tens custom boxes, panasonic head unit, punch grill....sold :-(
    09 camry se v6....gotta have a gas saver while in college...still gets up and goes tho

  5. #5
    Join Date
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    <div class='quotetop'>QUOTE(blackout00 &#064; Oct 9 2006, 11&#58;37 AM) [snapback]68515[/snapback]</div>
    i have 40 series dumped right now not loud at all....my friend has imco and i like it....its the imco extreme but it comes in to sizes 2 1/2 and 3 im gonna get single in dual out....and just dump it in front of axle....so i guess im just gonna order the 2 1/2.....thanks man
    [/b]
    Your 40 series isnt loud? Allstars 40 series Delta rumbles nice&#33; And I had a 40 series on my old Z71 that sounded pretty sweet.
    DANIEL CAMMED SS 13.46 @ 98.17-- 8.58 @ 80.31

    2003 Silverado SS / LQ9 6.0L / Wheatley 93 Octane Tune / 224/228 .581 .588 110lsa / Patriot Gold Dual Springs / Comp Hardened Push Rods / Circle D 3800 stall / Pacesetter LT's / 4:10 Gears / Transgo HD-2 Shift Kit / K & N Cold Air Intake / Corvette Servo / Aeroforce Interceptor / Autometer Narrorband(Wideband on the way) / Mobile 1 Synthetic / Single Chamber Flows with X Pipe / Cats Delete with Cutouts


  6. #6
    Join Date
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    <div class='quotetop'>QUOTE(Red03SilSS &#064; Oct 9 2006, 01&#58;02 PM) [snapback]68519[/snapback]</div>
    Your 40 series isnt loud? Allstars 40 series Delta rumbles nice&#33; And I had a 40 series on my old Z71 that sounded pretty sweet.
    [/b]
    Ya its nowhere as loud as imco on my friends f-150....it might be just cuz mine is old...


    2001 seirra 5.3L ex cab.-- 93 performance Nelson Tune,longtube pacesetter headers, ory, magnaflow with electric cut out, airaid cai, throttle body spacer, clear corners, 1400 watt system, 2 ifinity tens custom boxes, panasonic head unit, punch grill....sold :-(
    09 camry se v6....gotta have a gas saver while in college...still gets up and goes tho

  7. #7
    Join Date
    Sep 2004
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    Breaux Bridge, LA
    Posts
    667
    stock catback exaust on nbs is 2 3/4"
    before the cats is 2 1/2"

    that&#39;s strange your 40 ser. isn&#39;t loud dumped. i ran mine like that for a lil while. had to get rid of it b/c i couldn&#39;t stand all the drone.

    11' Sierra 6.2 NHT
    14.46@91 Stock
    89' Mustang LSX
    10.35@130 pump gas LQ4

    Knothead Racing

  8. #8
    Join Date
    May 2006
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    <div class='quotetop'>QUOTE(blackout00 &#064; Oct 9 2006, 01&#58;44 PM) [snapback]68522[/snapback]</div>
    Ya its nowhere as loud as imco on my friends f-150....it might be just cuz mine is old...
    [/b]
    I always heard the older they got the louder they got, just because the were getting "broke in". Maybe yours is defective . All the 40&#39;s ive heard have had a nice rumble, especially being dumped.
    DANIEL CAMMED SS 13.46 @ 98.17-- 8.58 @ 80.31

    2003 Silverado SS / LQ9 6.0L / Wheatley 93 Octane Tune / 224/228 .581 .588 110lsa / Patriot Gold Dual Springs / Comp Hardened Push Rods / Circle D 3800 stall / Pacesetter LT's / 4:10 Gears / Transgo HD-2 Shift Kit / K & N Cold Air Intake / Corvette Servo / Aeroforce Interceptor / Autometer Narrorband(Wideband on the way) / Mobile 1 Synthetic / Single Chamber Flows with X Pipe / Cats Delete with Cutouts


  9. #9
    Join Date
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    Wisconsin
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    882
    if you like listening to music, you might stay away from the imco extreme. your buddies setup wont be the same as yours.

    just my .02
    brad - my fquick..

    curb feelers and fuzzy dice..

  10. #10
    Join Date
    Oct 2005
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    drinking your alcohol
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    just cut it off and leave it open......
    Quote Originally Posted by DamnYankee View Post
    lol...I wish you would never paint your truck...I bet it bugs them that much more that a primered up truck just soggied his Wheaties. good job buddy
    sprayedenali: i like catching, but not fishing
    DBTBSS: bring Tyler... we need someone to make fun of
    MidnightRider: your right im gay
    DamnYankee: my nana failed
    DamnYankee: confused...if it can't keep up to begin with, how can it keep up
    mitch cobb racing: ya, allen played with it for a while, HUGE difference

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