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To do longtubes or not to do longtubes

Discussion in 'Exhaust' started by Nervouswreck, Aug 10, 2019.

  1. Nervouswreck

    Nervouswreck Member Established Member

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    May 5, 2015
    Location:
    Pennsylvania
    Hey guys , working on getting my winter list together and i have a question, are longtubes worth it ???

    I’ve read all the links on here , the exhaust section , the “ before you post “ part , and I’m still at a lost lol . So first off , here is what my goals are and my current setup

    I just had my motor rebuilt last year , just basic rebuild , heads completely redone, all new bearings top to bottom , new Manley pistons , Billet timing components, Billet guides , etc , also head cooling mod , and MMR oil pan .

    My questions, first off , being that i have an oversized oil pan can i have issues with either MAC LT’s or Kooks LT’s with fitment ? I’ve read guys with Kooks have fitment issues with oversized oil pans but haven’t heard of the same issue with the MAC’s . I’m still running the Eaton only ported , BAP , 60 lb injectors , upper pulley , and that’s about it , currently my hp is 490 hp ( on a Mustang dyno ) and on a 95 degree day lol . So what LT’s would you go with ?

    Second question, what hp gains could i expect with my current setup and adding the LT’s with a tune ?

    Thanks


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  2. wkornf

    wkornf Member Established Member

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    Mar 10, 2016
    Location:
    PBG
    not worth it on a 4v. makes serving the engine twice as hard or more if you don't have tubular k member. go with more boost.

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  3. Quick Strike

    Quick Strike Active Member Established Member

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    Location:
    PA
    I don't think you will see any gains in HP with long tubes until you step up to larger blower and more boost. I have Kooks stepped headers and they fit around my Canton road racing pan just fine.
     
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  4. hotcobra03

    hotcobra03 Well-Known Member Established Member

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    Location:
    poteet,texas
    I just enjoy the added responce and sound.
     
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  5. DSG2003Mach1

    DSG2003Mach1 Well-Known Member Premium Member Established Member

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    Location:
    Central Fl
    kooks ground clearance blows in my experience
     
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