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Thread: Mufflers?????

  1. #1

    Default Mufflers?????

    ok i have a 2007 new body 4.8 with a cherry bomb extreme muffler on it it just cat back no headers or aftermarket cats and i was thinking about switching to a slp loudmouth 2 or a dynomax bullet but i dont know which one to go with i want it loud but still sound good so what yall think i should go with a change or leave it how it is???

  2. #2
    Sr. Mechanic SmokeU's Avatar
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    Quote Originally Posted by 4.8chevysilverado07 View Post
    ok i have a 2007 new body 4.8 with a cherry bomb extreme muffler on it it just cat back no headers or aftermarket cats and i was thinking about switching to a slp loudmouth 2 or a dynomax bullet but i dont know which one to go with i want it loud but still sound good so what yall think i should go with a change or leave it how it is???
    I wouldn't change the muffler, just add some headers and it should be better
    2004 Chevy Silverado w/ 5.3L V8 / Z71 / Shorty

    Would rather be going too fast then too slow:out:

  3. #3

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    If you do decide to go with the headers, go ahead and spring for the LTs. You can also look into getting a set of high flow cats.
    2002 Chevy 1500 Ex-cab Z71: 5.3L, auto 4, shorties, hi-flow cats, true dual 2.5" straight pipes, AirAid intake, TBS, Platinum plugs, 8.5mm wires, programmer, 3in w/ 33s, also has the composite bed

    2010 GMC 1500 Crew Cab Z71 w/ All Terrain package: 5.3L, auto 6, 2" Zone leveling kit, AirAid Jr. Intake Kit

  4. #4

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    i was thinking about doin that with the lt headers but no cats

  5. #5

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    A lot of LT setups don't even have cats and the ones that do, are pretty pricey. If you already have a cat back system it will have to be modified to accept the LTs.

  6. #6

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    i was thinkin about runnin 3" pipe in it

  7. #7

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    I know the stock pipe for the 5.3 (not sure about the 4.8) is 3" until you get to the muffler and i would think that you cat back system already has a 3" pipe. the Pacesetter LTs have 3" collectors and with the Pacesetter 3" Y pipe you shouldn't have much pipe left. You may want to just take you cat bask system off (put it one E-Bay) and just run a 3" pipe straight to the back.

  8. #8

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    why is there an ad for ford cars on this post?

  9. #9

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    I've used the dynomax superturbos on both ford and chevy applications, and love them. they've got a great low rumble at idle, and a nice roar when you get on it, but not obnoxiously loud.
    1986 Chevy G20 Tow Rig - 5.7 TBI conversion
    1978 Mustang II King Cobra Road Racer - Holley 650, MSD 6AL, 5 speed, 10 point Roll Cage, 9" posi, fuel cell, custom interior.

  10. #10

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    Quote Originally Posted by 4.8chevysilverado07 View Post
    ok i have a 2007 new body 4.8 with a cherry bomb extreme muffler on it it just cat back no headers or aftermarket cats and i was thinking about switching to a slp loudmouth 2 or a dynomax bullet but i dont know which one to go with i want it loud but still sound good so what yall think i should go with a change or leave it how it is???
    ive got a '10 silverado with the 5.3 and ive only have the factory cats and a Y-pipe where the muffler was. its not obnoxious by anymeans and it sounds amazing, everyone around here says its one of the best sounding trucks around where i live. idk how the 4.8 would sound with the lower displacement but i thought itd throw my 2cents in

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