Dismiss Notice

Welcome To CK5!

Registering is free and easy! Hope to see you on the forums soon.

Score a FREE t-shirt and membership sticker when you sign up for a Premium Membership and choose the recurring plan.

Quiet performance muffler?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by Alex, Feb 5, 2003.

  1. Alex

    Alex Registered Member

    Joined:
    Jun 19, 2001
    Posts:
    78
    Likes Received:
    0
    Location:
    Northern California
    Hi all, any such thing as a high flow - quiet - performance muffler with 3-inch inlet/outlet? My current unit is giving me headaches under tow. /forums/images/graemlins/confused.gif
     
  2. 4x4dreamer

    4x4dreamer 1/2 ton status

    Joined:
    Jul 8, 2002
    Posts:
    874
    Likes Received:
    0
    Location:
    St. Petersburg, FL
    Quiet...performance....DOES NOT COMPUTE
    Error
    Error
    Error
     
  3. bigmack

    bigmack 1/2 ton status

    Joined:
    Jan 3, 2002
    Posts:
    478
    Likes Received:
    0
    Location:
    Tennessee
    What kind of muffler do you have now ? Do you have a full legnth tailpipe, or a short turndown, or what ?
     
  4. heavy4x4

    heavy4x4 1/2 ton status

    Joined:
    Aug 28, 2002
    Posts:
    3,270
    Likes Received:
    0
    Location:
    Delafield, Wisconsin
    Because of a run in with the Wisconsin State Patrol, I had to change out my glasspack with a quieter muffler. So, I took it to the shop that put the dual exhaust in, and they installed an "Xelerator" muffler. Much quieter than before /forums/images/graemlins/frown.gif but no loss in performance/power (well, not noticeable anyway). It still has a decent grumble during hard acceleration though, so I'm happy about that. It's just less of a cop magnet now. (By the way, the muffler they put in was a 3" inlet, dual 2.5" outlet - at least I think those are the sizes)
     
  5. loudnowlouder

    loudnowlouder 1/2 ton status

    Joined:
    Jan 29, 2001
    Posts:
    539
    Likes Received:
    0
    Location:
    Ellicott City, MD
    i've got a set of dynamax mufflers, i think the turbos, pretty cheap, good airflow, pretty quiet at idle and low rpms...doesnt get loud till the engine opens up at the high 2k-low 3k range, then it gets pretty loud...

    thats about the best you're going to find for a performance muffler, quiet most of the time, from my experience anyways
     
  6. Thunder

    Thunder 3/4 ton status

    Joined:
    Jul 20, 2000
    Posts:
    8,946
    Likes Received:
    1
    Location:
    Northeast Nevada
    Flowmaster 70 series. They come in all different sizes and inlet outlet configurations. They Flow real good and are pretty quiet at idle and cruise. But sound great when accelerating. Not real loud they just sound good.
    I'm running a 3" with no cat and with a turn down right after the muff on my K5 and its not bad( I dont like loud exhaust) and I have installed a couple of single 3" systems with 70 series on buddys trucks who did not want real noisy exhaust and they are pleased.
     
  7. xnoahx

    xnoahx 1/2 ton status

    Joined:
    Oct 12, 2000
    Posts:
    817
    Likes Received:
    0
    Location:
    Ventura, CA 93004
    just run two "turbo" mufflers! /forums/images/graemlins/tongue.gif One right after the other, that should give you some cheap quiet
     
  8. Blazer_Boy

    Blazer_Boy 1/2 ton status

    Joined:
    Dec 16, 2000
    Posts:
    1,669
    Likes Received:
    0
    Location:
    Sioux City, IA, USA
    I like the dynomax's. I believe they flow a pinch more than flowmasters (difference isn't much) and have a lifetime warranty as opossed to one year. Not to mention almost a third less. /forums/images/graemlins/thumb.gif
     
  9. 4DiggerDan

    4DiggerDan 1/2 ton status

    Joined:
    Feb 2, 2003
    Posts:
    103
    Likes Received:
    0
    Location:
    Montucky, USA
    Just run open headers for about a month, then when you put your exhaust back on you'll appreeciate how quiet it is /forums/images/graemlins/rotfl.gif
     
  10. Triaged

    Triaged 1/2 ton status

    Joined:
    Feb 21, 2001
    Posts:
    3,808
    Likes Received:
    0
    Location:
    CA (LA/OC area)
    I like the dynamax super turbo. You can get them from Kragen for around $30.
     
  11. schmuck

    schmuck 1/2 ton status

    Joined:
    Nov 11, 2002
    Posts:
    523
    Likes Received:
    0
    Location:
    nola(new orleans LA)
    ive run dynomax super turbos in 3 and 21/2 inch and the 3 are still pretty loud but that was with turn downs
     
  12. ds350

    ds350 1/2 ton status

    Joined:
    Jan 26, 2001
    Posts:
    190
    Likes Received:
    0
    Location:
    Bay Area
    I put the Gibson exhaust on my '87 blazer. It is not as loud as the flowmaster, and slightly louder than stock. Overall I am very happy with it. They even have a stainless steal exhaust that you can purchase. It is 3" from the CAT to the outlet.
    /forums/images/graemlins/thumb.gif
    Danny
     
  13. pilgrim

    pilgrim 1/2 ton status

    Joined:
    Sep 10, 2001
    Posts:
    247
    Likes Received:
    0
    Location:
    new hampshire
    i HAD one 3" in/out flowmaster series 50. it was pretty loud for my taste, esspecaily running it down the highway i couldn't hear my tires /forums/images/graemlins/frown.gif (i like there sound better /forums/images/graemlins/grin.gif)

    so i traded it out for a MAGNAFLOW. and i'am very happy. first off the sound is nice and is only noticable really around 1500-1900 in my truck. after that it shuts right up, so you could fly down the road and not even hear it /forums/images/graemlins/grin.gif
    second: if you look down inside a flowmaster there baffled, not so with the magnaflow its 3" right on through. so you get great performance and lower sound /forums/images/graemlins/grin.gif
     
  14. fortcollinsram

    fortcollinsram 1/2 ton status

    Joined:
    Nov 8, 2001
    Posts:
    2,261
    Likes Received:
    0
    Location:
    Fort Collins, CO
    I thought they (Flowmaster 70's)were supposed to be quiet too...that was until I heard them on Shawn Spicklers truck...those damn things are LOUD...when we (me, Tim and TJ) were coming up on his 6 on the interstate, you could easily hear how mean his engine was from like 1/4 behind him...LOUD...Granted, it is behind a built 496 BBC with 3" piping...

    Chris
     
  15. Alex

    Alex Registered Member

    Joined:
    Jun 19, 2001
    Posts:
    78
    Likes Received:
    0
    Location:
    Northern California
    pilgrim, is your MAGNAFLOW 2 or 3 chamber? In, general, the 2 chamber models tend to be loud.
     
  16. MITCH_89'

    MITCH_89' Registered Member

    Joined:
    Dec 7, 2000
    Posts:
    91
    Likes Received:
    0
    Location:
    GULF BREEZE, FL.
    2 days ago, I put a Delta Flow Flowmaster 50 series on my 89. To me, It is perfect. When I Get into overdrive, I cant even hear it. But it sounds sweet at idle and acceleration. Go to flowmasters website and find sound clips. I paid 150 installed
     
  17. MudFrog

    MudFrog 1/2 ton status

    Joined:
    Feb 23, 2000
    Posts:
    3,236
    Likes Received:
    0
    Location:
    Daleville, Va
    Alex.. I have an 87-91 Flowmaster CAT back kit (3" Mandrel bent) with 50 series Delta Flow, shoot me a PM if interested.
     
  18. BlazinRojo

    BlazinRojo 1/2 ton status

    Joined:
    Mar 29, 2001
    Posts:
    111
    Likes Received:
    0
    Location:
    San Luis Obisbo, CA
    I've got a Flowmaster 70 series in my 83. Nice and quiet until you step on it, and even then its perfectly tolerable. To tell the truth, the rear window needs ot be down to really hear it. With the window up, the cab is nice and quiet
     
  19. pismorat

    pismorat 1/2 ton status

    Joined:
    Oct 29, 2002
    Posts:
    540
    Likes Received:
    2
    Location:
    California
    I have a six month old Flowmaster 3" inlet, 3" outlet, 3-chamber. It is supposedly loud, but I don't think so. I am willing to get rid of it if I can get a louder 2-chamber. I am even dumping it right behind the muffler. Anyone wanna trade???? /forums/images/graemlins/thumb.gif /forums/images/graemlins/truck.gif
     
  20. pilgrim

    pilgrim 1/2 ton status

    Joined:
    Sep 10, 2001
    Posts:
    247
    Likes Received:
    0
    Location:
    new hampshire
    as far as i can tell alex the Magnaflow i have does not have any chamber type design. looking down the inside there is the 3"in/out pipe running straight through with 1/4" holes all over the inside, behind which i'am told is very good "lifetime" glass pack material.. at first this kinda turned me off(the glaspacking) but after hearing the nice lower rumble at idle and better control of sound at highway speeds,(it gets quitier /forums/images/graemlins/grin.gif). and the fact that you can't get any lower of a restriction than straight through /forums/images/graemlins/thumb.gif they win... /forums/images/graemlins/grin.gif
     

Share This Page