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4.3L muffler recommendations

Discussion in 'Engine & Performance' started by 78C10BigTen, Apr 6, 2020.

  1. 78C10BigTen

    78C10BigTen Full Access Member

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    So i cant leave well enough alone, i want to swap the exhaust on my s10 and need to know what after market mufflers sound best on a 4.3L v6. Anybody have one that can suggest something? Keep in mind i have dual flowmaster super 44s on my square so i dont mind it very aggressive . Just not sure what sounds good on a v6
     
  2. Catbox

    Catbox Full Access Member

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    I can tell you a Flowmaster just does not sound quite right behind one of them.
    I had convinced my old boss to let me change some things on my work van in the name of better fuel economy long ago during the first fuel crisis.

    I put a 50 series Flowmaster under it with the same size exhaust piping.
    I just changed the muffler, so it was still a single exhaust with cat.

    I love flowmasters and have a set under my truck now and will have them under my Bel Air as well.
    But I won't put one back under a V-6 again.

    It might be different if you were to split the exhaust for true dual pipes, I don't know.
    My Bel Air has a straight six in it with a split exhaust.
    It has these teeny tiny little cherry bombs under it that are maybe 12 inches each.
    It sounds pretty good.
     
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  3. bucket

    bucket Super Moderator Staff Member

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    Ted has already heard my thoughts, but I'll put it here too.

    I tried multiple setups, the most V8 rumbly sounding I could get my TBI 4.3 to sound was with a factory y-pipe, 2.5" to the Flowmaster 40 series, then a 2.5" tailpipe with it pointing out the side, at the curb. It's the only V6 I would put a Flowmaster 40 on, they sound terrible on a 60* engine.

    I tried so many different setups because I had other complications to deal with being a 5 speed. With just a cat and no muffler, it would pop and cackle during a shift for example. And with a Dynomax turbo muffler, it sounded like an old tractor when driving around town in the higher gears. That Flowmaster 40 was the best compromise all around.
     
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  4. Rusty Nail

    Rusty Nail Whatever!

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    I had a 4300 when I got here and ran a DYNOMAX SUPER TURBO behind it.

    Got comments ALL THE TIME about how freaking awesome it sounded but only because it did.

    For a v6? It WAS bad ass sounding...

    ONE 2.25" muff with a 12" long x 3" "echo tip" - no resonator.
    ONE pipe.

    Hope this helps!

    20200406_151455.jpg
     
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  5. 82Diesel

    82Diesel Full Access Member

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    Flow master Super 40s or Cherry Bombs :)
    If you want really aggressive go Super 10s.
     
  6. 78C10BigTen

    78C10BigTen Full Access Member

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    Echo tip??
     
  7. WFO

    WFO Full Access Member

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    For a 6 banger, I say the quieter the better. I like loud V8s, and even 4 cylinders, especially motorcycles, but not 6s.
     
  8. 78C10BigTen

    78C10BigTen Full Access Member

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    I hate bein quiet and i know these 4.3s have a throaty growl so id like to make her louder
     
  9. Rusty Nail

    Rusty Nail Whatever!

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    Last edited: Apr 6, 2020
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  10. 78C10BigTen

    78C10BigTen Full Access Member

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    Was it quiet at idle?
     
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  11. Rusty Nail

    Rusty Nail Whatever!

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    Sounded like a 350, I swear people were ALWAYS making comment in amazement at it was a 6.
    Sounded radder than shit at 3k too.
     
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  12. 78C10BigTen

    78C10BigTen Full Access Member

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    I may be trying this setup..... where dit it exit?
     
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  13. Rusty Nail

    Rusty Nail Whatever!

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    Full length, over the axle, tucked gently underneath the bumper.

    NOT under the bed, under the bumper.
    HUGE difference.

    I say it a lot in here, those are really great mufflers. If you don't want a Flow, that's the way to go.
    Go for it man, give one a go- I bet you will love a SUPER TURBO.

    20200407_002557.jpg

    (Google Maps picture)
     
    Last edited: Apr 7, 2020
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  14. MikeB

    MikeB Full Access Member

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    I second the comments above about the Walker Dynomax Super Turbo. It won't be super loud, but will sound really good and flows better than a Flowmaster. That's as per engine guru David Vizard, and I doubt he has a horse in the race.

    Also, try to use mandrel bends if possible, instead of muffler shop crush bends. That's probably the most neglected aspect of exhaust systems. Crush bends make a 2.5 pipe flow like a 2"-2-1/4" pipe. Can't tell you how many muscle cars and hot rods I've worked on that had $5K-$10K engines, headers, and high performance mufflers, but with super-restrictive crush bent pipes. Probably 25-40 hp up in smoke.
     
    Last edited: Apr 14, 2020
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  15. jtridgley79

    jtridgley79 Full Access Member

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    My old s10 had a cherry bomb vortex.
    2.5 in dual 2.25 or 2.5 out,can't remember with 3 inch tips
    Sounded good and throaty.

    Sent from my SM-A505U using Tapatalk
     

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