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Thread: Exhaust System Questions
          
   
   

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  1. #1
    mprevo's Avatar
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    Exhaust System Questions

     



    I am getting ready to do the exhaust system on my Hot Rod and I have a few questions:

    Here is what I have:
    - 383 Stroker, aluminum heads, forged internals, cam, etc. (probably between 450 - 500 HP)
    - Speedway Shorty headers with 1 5/8" tube size and 2 1/4" collectors (this is what came with the headers).


    Here are my goals:
    - I would like an exhaust system that is very "Deep" and/or "Throaty"
    - I plan to run the exhaust out the back of the car.
    - I plan to run a true duel exhaust from the headers back. No cross over or "X"
    - I do not plan to race this car at the track but I like all of the power I can have. Just in case....


    Here are my questions:
    - Is the 2 1/4" size adequate or would it be constricting the engine to much?
    - If 2 1/4" collector is a problem do I change the collector or just up size to a large pipe right after the collector?
    - If the 2 1/4" is a problem what size exhaust is recommended?
    - Would a larger exhaust pipe give me a deeper sound?
    - Any other concerns I should have?


    Thanks in advance.


    .
    It is easy to make a small fortune in Hot Rods. Just start with a large one.......

  2. #2
    34_40's Avatar
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    Here's my thoughts and opinion... 2.25" will be fine. I don't believe the next size up ( 2.5") will change the sound any. I ran mine all the way to the rear and only used resonators ( Hush Powers) The look like small mufflers on the outside and the sound is perfect, no resonance or hum. My only other thought is that you need to add in a "H" pipe ( X is a little better) the "H" / "X" really adds to the overall tone and helps squelch the "bad' harmonics. I added mine right between the trans bell and the basepan, it added a lot to the overall sound for the better.

  3. #3
    mprevo's Avatar
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    OK I did I little reading on "X" vs "H" pipes and I learned something new today. I never realized the benefits they offer. It appears that if I want the deeper sound than the "H" pipe is the way to go. I just need to find a spot under my car that I can tie the two together. Thanks for that advice.

    As far as an actual muffler goes I checked out the Flowmaster HushPower Pro Series. From what I could tell they sounded really good (checked a few youtube videos comparing the different sounds). I was originally thinking that I was going to go with the Super 40 series but now I have to rethink things.

    In my mind the exhaust system is very important because I love the way a rumbling exhaust sounds. Anyways now I will have to figure out which muffler to use......

    Does anyone have any thoughts on the different brands??? Flowmaster vs. Borla vs. Summit, etc????


    .
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  4. #4
    DennyW is offline CHR Member Visit my Photo Gallery
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    Quote Originally Posted by mprevo View Post
    OK I did I little reading on "X" vs "H" pipes and I learned something new today. I never realized the benefits they offer. It appears that if I want the deeper sound than the "H" pipe is the way to go. I just need to find a spot under my car that I can tie the two together. Thanks for that advice.

    As far as an actual muffler goes I checked out the Flowmaster HushPower Pro Series. From what I could tell they sounded really good (checked a few youtube videos comparing the different sounds). I was originally thinking that I was going to go with the Super 40 series but now I have to rethink things.

    In my mind the exhaust system is very important because I love the way a rumbling exhaust sounds. Anyways now I will have to figure out which muffler to use......

    Does anyone have any thoughts on the different brands??? Flowmaster vs. Borla vs. Summit, etc????


    .
    I run an H pipe myself. In the old days, I would combine the H pipe with Thrush mufflers. Sounded good and would really talk when you hit the pedal. How ever, if you let it wind down, they would really talk... To combat that, I added the thrush hush shorty mufflers, much like resonator mufflers to calm the barking down, and just get the tone. The people that bought the thrush muffler, have designed new types, with up to 70% flow rate. I suggest you do a you tube video on them. Sound good, and free flow, with good tones... Just a suggestion. They also have a style that is all metal, no glass or steel wool inside. Means longer lasting, while keeping the same tone out the rear.

    PS:
    The H pipe is good for low to mid-range power...
    http://www.autoanything.com/exhausts...pipe-vs-h-pipe
    Last edited by DennyW; 11-29-2016 at 11:18 AM.

  5. #5
    mprevo's Avatar
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    Dang it is so hard to tell which sound is the best. I did check out the Thrush ones and the prices look much better then Flowmaster. I have also been looking at Brockman Mellowtones. Anybody have any experiences with these??


    .
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  6. #6
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    i have the flowmaster 2 chamber 40 series which have been on my 351 stang and are now on my 429 truck and as much as i love them i will go with borla if i ever buy again .. a friend had borlas on his blown stang and it was incredible ....
    iv`e used up all my sick days at work .. can i call in dead ?

  7. #7
    DennyW is offline CHR Member Visit my Photo Gallery
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    Here you go... 383 Borla exhaust...
    https://www.youtube.com/watch?v=-SVJdNfIp1c

  8. #8
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    If you want a throaty, deep horsepower sound, you can't beat Dynomax Ultraflows. I have them on my deuce coupe and really like the sound they produce. I personally don't care for the tinny sound of Flowmasters. Some do, I don't.
    Last edited by rumrumm; 11-30-2016 at 05:32 AM.
    mprevo likes this.


    Lynn
    '32 3W

    There's no 12 step program for stupid!

    http://photo.net/photos/Lynn%20Johanson

  9. #9
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    In reality, listening to videos and then listening to a car "in person" end up being two different things.

    I love the sound of flowmasters on the 80's and 90's Mustangs. But when I listen to them on youtube it just isn't the same. I think once you find a muffler you can live with, budget and size being considerations, it'll end up being the right choice in the end.

  10. #10
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    Well I just checked out the Dynomax Ultraflows and that is the sound I am looking for. OK, so now I am more confused than ever. Haha. No seriously I appreciate the advice and help from everyone. Although as of right now I am leaning towards the Dynomax.

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  11. #11
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    Okay then.. so we've changed your mind at least twice today!
    40FordDeluxe and mprevo like this.

  12. #12
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    Yeah right now is easy to change your mind, but as long as it is in a better direction I'm happy. Bad part is I haven't got anything done at work all day. All I have been doing is listening to mufflers on youtube.


    .
    34_40 and 40FordDeluxe like this.
    It is easy to make a small fortune in Hot Rods. Just start with a large one.......

  13. #13
    DennyW is offline CHR Member Visit my Photo Gallery
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    Quote Originally Posted by 34_40 View Post
    In reality, listening to videos and then listening to a car "in person" end up being two different things.

    I love the sound of flowmasters on the 80's and 90's Mustangs. But when I listen to them on youtube it just isn't the same. I think once you find a muffler you can live with, budget and size being considerations, it'll end up being the right choice in the end.
    True, but it gives you a type of sound direction to what they do, and a general tone they make...

  14. #14
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    It's good work when you can find it
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  15. #15
    DennyW is offline CHR Member Visit my Photo Gallery
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    Quote Originally Posted by mprevo View Post
    Yeah right now is easy to change your mind, but as long as it is in a better direction I'm happy. Bad part is I haven't got anything done at work all day. All I have been doing is listening to mufflers on youtube.

    .
    I know what you mean. It's hard trying to pick out things before you buy them...

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