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  1. #1
    I can't car too good. SaukRapids's Avatar
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    Default Resonators; Now with some part numbers

    Last season, there was a long discussion about exhaust and math.

    Choosing a resonator looks like a crapshoot without getting into any of that.

    It looks to me like the easiest (cheapest?) way to replace the stock one is to cut near the flange, kinda where I measured.





    Then in the back, cut kinda there?



    This 05 GTP then has almost 30" dead nuts to clamp in.

    Does anyone know the key to not sounding like total garbage? Whatever diameter x28" ..x24" ..maybe even 2x12" length welded together?

    Is worth considering smaller OD than 4 Inch? Seems like it would be loud.

    Thanks for any advice!
    Last edited by SaukRapids; 2 Weeks Ago at 08:54 PM.

  2. #2
    I can't car too good. SaukRapids's Avatar
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    Default Re: Resonators; What do I need to know?

    Sounds like the best way to keep it lined up and looking nice is to have a place weld one in. Thanks on that, Scotty.

    Still on the fence about what to get. The leak's getting worse on mine.

  3. #3
    Killa Bee Scottydoggs's Avatar
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    Default Re: Resonators; What do I need to know?

    my cat back was al slip joints, so i got a 32 inch glass pack, bought a flange cut the tube off one end and welded the flange on the gp.







    i still have this too. i got a new cat back and saved it, cause we all know the res likes to rot out.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, 2.8, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW

  4. #4
    GTP Level Member cheatah faheatah's Avatar
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    Default Re: Resonators; What do I need to know?





    I shoved on and clamped this glass pack on a year ago, still on after a New England winter......
    not what it looks like

  5. #5
    GTP Level Member cheatah faheatah's Avatar
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    Default Re: Resonators; What do I need to know?

    See post #7430 in the "boat" section for more info.....
    not what it looks like

  6. #6
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    Default Re: Resonators; What do I need to know?

    It seemed like you could do a walker resonator pipe and muffler with 2 clamps of rock auto for like $130. And that would not involve any cutting or welding. Do they sound ok? Or am I missing something and that would not all just bolt right up.


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  7. #7
    I can't car too good. SaukRapids's Avatar
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    Default Re: Resonators; What do I need to know?

    Looked through a bunch of catalogs for bigger 2.25" resonators/mufflers for reference.

    These are all center on center. Part numbers only, source and pricing up to you. I'm bookmarking for later.

    Listed by diameter, smallest to largest - Muffler/can length - Overall length (OAL)

    Stock on 2005 CompG

    4.5" Round - 29" can -32" OAL (approx)

    Walker OE Replacement

    4" Round - 24.25" can - 30" OAL - PN# 21383 - includes welded flange to mount to stock downpipe

    Magnaflow Aluminized (*Red finish)

    3.5" Round - 22" can - 26" OAL - PN# 18135, *13135

    3.5" Round - 26" can - 30" OAL - PN# 18145, *13145

    Patriot Exhaust (China)

    3.5" Round - 26" can - 30" OAL - PN# H3014, *Advertised as Hammertone finish

    3.5" Round - 30" can - 35" OAL - PN# H3015 *Also in Hammertone

    AP Exhaust, makers of Cherry Bomb Listed by size can/silencer, then name sold under, etc.

    4" Round Xlerator Stainless Steel - 18" can - 24" OAL - PN# XS0425 (Also sold under Jones Exhaust PN# JXS0425)

    4" Round Enforcer Aluminized glasspack - 22" can - 28" OAL - PN# 402211S

    4" Round Enforcer Aluminized glasspack - 30" can - 36" OAL - PN# 403011S

    4" Round Enforcer Turbopack. These have a restrictive 1.75" core to be quieter - 24" can - 30" OAL - PN# 4224112S

    7" Round Enforcer II. Truck muffler w/turndown you'll have to cut off. I don't think it'll fit, but here it is - 26" can - 32" OAL - PN# 4267

    Note: I did measure 7" using a template. It'll fit, but it's very tight. Might vibrate on the tunnel or hit the ground without modification to the tunnel and/or muffler.

    Stainless Works Exhaust Don't know much about these, and they're expensive. 304 Stainless throughout, even packing material. Looks oldschool and they make custom lengths.

    3.5" Round - Smooth Tube Muffler - ??" can - 24" OAL - PN# ST222422 (Polished - PN# ST222422P)

    2 1/2" x 4 1/8" Oval - Smooth Oval - ??" can - 24" OAL - PN# SO222422 (Polished - PN# SO222422P)

    ??" Round - Chambered Round Classic Mufflers - ??" can - 30" OAL - PN# CR225225 (Polished - PN# CR225225P)
    Last edited by SaukRapids; 1 Week Ago at 11:49 AM. Reason: Added/Removed PN#'s

  8. #8
    GTP Level Member buck531's Avatar
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    Default Re: Resonators; Now with some part numbers

    I have a 2.5" magnaflow resonator from my other car that's practically brand new that i'd sell for pretty cheap. I think the end is cut off but it can be fixed.
    03 GS - BTTK Intercooler, 3.0 PRJ, 42 lb, SSAC, AEM wb, PT,SR rockers, Gen V, N* TB, dynotech trans w/ 3.29's.

    87 Fiero GT. L67 Swap. XP, ported heads/sc. N* TB. 275 whp on a 3.4 and 8 lbs of boost.

  9. #9
    I can't car too good. SaukRapids's Avatar
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    Default Re: Resonators; Now with some part numbers

    Thanks, buck!

    I think some of those listed start in the $30 range. Probably just gonna grab new.

  10. #10
    I can't car too good. SaukRapids's Avatar
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    Default Re: Resonators; Now with some part numbers

    Double checked part numbers, found and fixed some errors.

    This search was pretty extensive to fit stock location over an 18" silencer.

    Google has tons of short little 2.25" pipe diameter cans. This list shows some, if not most, of the longer options.

    Think I got mine picked out, just waiting till money.

    Thanks!

    Edit: This one might win for cheapest. Lol

    Last edited by SaukRapids; 1 Week Ago at 01:36 PM.

  11. #11
    Donating Users coolone's Avatar
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    Default Re: Resonators; Now with some part numbers

    Cheapest usually isn't the best... You want some packing in there and that cost $, lol

    You also didn't list the Vibrant Ultra Quiet, one of the best, but not cheapest!

  12. #12
    I can't car too good. SaukRapids's Avatar
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    Default Re: Resonators; Now with some part numbers

    Quote Originally Posted by coolone View Post
    Cheapest usually isn't the best... You want some packing in there and that cost $, lol

    You also didn't list the Vibrant Ultra Quiet, one of the best, but not cheapest!
    Oh, I definitely agree on cost.

    The Vibrant's are Ultra Quiet PN# 1140 and PN# 1790 for the bottle style.

    Both are rather small, but apparently very good. They come in at 13.75" OAL, and 12" OAL respectively.

    A person could probably use those alone or in conjunction with whatever. Really, it's all just a big sound experiment for everyone. Lol

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