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Glass packs or flowmaster

This is a discussion on Glass packs or flowmaster within the External Engine forums, part of the LSx Technical Help Section category; Im having trouble deciding whether to get glass packs or a flowmaster. I want know which one is loudest...

  1. #1
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    Glass packs or flowmaster

    Im having trouble deciding whether to get glass packs or a flowmaster. I want know which one is loudest

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    Member godless-phoenix's Avatar
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    Blackened fire chicken
    2000 Pontiac Trans Am WS6

    glass packs would definitely be louder...i run with stock manifolds and cats with an slp y-pipe and an electric cutout with no muffler. basically like a straight pipe set up with a cutout...its fairly loud

  3. #3
    Former Mopar Man 2002ssslp's Avatar
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    Silver & Blue
    02 Camaro SS, 04 GTO

    Welcome. Glass packs are louder then a flowmaster system. Do you really want to live with a glass pack system ?

  4. #4
    Member flybird's Avatar
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    Mid Night Blue
    1999 Firebird 3.8 series

    Id roll with flowmaster instead of g.packs.. G.packs are to much for me lol.

  5. #5
    Junior Member EPIDEMIC's Avatar
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    arrest me red
    2002 z28 camaro

    I know it wasnt one of the options, so maybe this is no help. imo, slp loudmouth.

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    Senior Member Too Fast's Avatar
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    2000 WS6 6spd Hooker LT

    Quote Originally Posted by ArmyRangers2015 View Post
    Im having trouble deciding whether to get glass packs or a flowmaster. I want know which one is loudest
    Welcome fellow Hoosier.
    Glass packs would be louder, and most here will say the Flowmaster for our F-bodies barely flows better than stock. Sounds great, tho!
    If you want loud, get a cut-out on your I-pipe, to have loudness on demand.

  7. #7
    Veteran 0rion's Avatar
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    06 duramax

    what's the rest of your exhaust set up and what are your plans for the exhaust if it's still stock? Do you plan on headers with no cats or anything like that down the road? I would factor all this in before buying the first piece. A cutout is pretty damn fun to have so I personally would go with a quieter muffler to have when you need it and put an electric cutout on it for when you want it loud.

  8. #8
    its short but its skinny. jiveass's Avatar
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    pewter
    99 trans am

    i had a glasspack on my 2000 formula....it was not too loud at cruising speeds...but it damn sure opened up when i stepped in it....

  9. #9
    Member chris1974's Avatar
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    Bright Red
    1998 Firebird Formula LS1

    Glass packs sounds like crap IMO.....but mufflers/exhaust comes down to personal preference as far as sound goes.

  10. #10
    Junior Member Justin D's Avatar
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    99 Trans am

    If you get LT'S down the road flowmaster sounds JUST LIKE A TRUCK...Sounds good..On a F150. Plus flowmaster flows like shit.
    The only flowmaster that are any good would be super 10s. That's for a nice dual system though.
    SLP CAI...P/P TB...LS6...PACESETTER LTS...TSP TDS...3.73s...UMI: STRUT-LCAs-TA-PH ROD-POLY MMs
    BILSTEINS/STRANO...FROST TUNE

  11. #11
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    2001 CAMARO SS / Black
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    IMO glass packs sound good when you first install them, but when they blow out, and that's pretty quick, you can forget music or conversation while driving.

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    black
    firebird formula 99

    I have the flowmaster 10 series on mine with Lts it sounds great but you can hear it coming from a few blocks away

  13. #13
    Drop&Drag matt evans's Avatar
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    02 Z28 and 00 SS

    Both my cars has true duals/x-pipe with glasspacks and they are not bad at all. My Z28 has the ms4 cam and it drowns out my buddies ss that had slp1 with the polluter cam. My ss has a mild cam and it has a nice rumble to it. Both cars of which dont have that rasp at 3k like most catbacks have.

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    Senior Member Too Fast's Avatar
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    ^^^Your X-pipe really helps the exhaust out, esp w/glass packs. I bet it does sound nice. I had a vehicle once with some long glass packs, sounded great. I also had one with some short glass packs, it was pretty obnoxious until I fabbed an H-pipe for it. Yours on the Camaros are dumped before the axle?

  15. #15
    Impounded
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    go with a slp lmII resonator. its loud and sounds good. and i have one for sale

  16. #16
    Drop&Drag matt evans's Avatar
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    02 Z28 and 00 SS

    Quote Originally Posted by Too Fast View Post
    ^^^Your X-pipe really helps the exhaust out, esp w/glass packs. I bet it does sound nice. I had a vehicle once with some long glass packs, sounded great. I also had one with some short glass packs, it was pretty obnoxious until I fabbed an H-pipe for it. Yours on the Camaros are dumped before the axle?
    Yea i had both mine stopped at the axle. My only complant is with my cars lowered the glasspacks drag a little bit out of my driveway.

  17. #17
    Junior Member EPIDEMIC's Avatar
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    arrest me red
    2002 z28 camaro

    I'll try to up a link to a video clip of my car. I have pacesetter LT, pacesetter Y pipe, Slp LM2 resonator

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