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Thread: Exhaust System Questions
          
   
   

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  1. #31
    Ken1960 is offline CHR Member Visit my Photo Gallery
    Join Date
    Jul 2014
    Location
    Richmond
    Posts
    106

    Dynamax ultafo. Not flow disaster kill your power

  2. #32
    rumrumm's Avatar
    rumrumm is offline CHR Member Visit my Photo Gallery
    Join Date
    Jan 2004
    Location
    Macomb
    Car Year, Make, Model: '32 Ford 3W Coupe, 383 sbc
    Posts
    1,564

    Excuse me, but your point is . . . ?


    Lynn
    '32 3W

    There's no 12 step program for stupid!

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

  3. #33
    Rrumbler is offline CHR Member Visit my Photo Gallery
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    Jun 2004
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    Las Vegas
    Car Year, Make, Model: Sans hot rod, sold the truck.
    Posts
    1,207

    The first incarnation of my '59 Chevy pickup, I put a 350 out of a wrecked '67 Camaro in it; had long tube headers into 2-1/2" tubing, turbo mufflers (don't remember the brand, but got them at So Cal Speed), and about 30" of tubing behind the muffs int turn downs right by the rear axle. It had a nice Rrumble, but no rap at all, and the only drone I got was at about 50 - 55 on the freeway - never noticed it on city streets - it was quite civil. That engine went away, to the point I could run it, but not trust it, and the truck got grounded for a while before I got around to getting another engine built for it, only being started and moved once in a while. Some years later, I got around to getting it re-done, needed it for getting to work; put a newly built 350 in it, and re-used the long tubes, but the turbo mufflers were rusted from not getting hot enough to dry out the accumulated condensation when it got started and moved from time to time, so I grabbed some no name brand 30" glass packs for it just to get it driveable; they were 2-1/2" in and out with a 2-1/4" core tube with louver type perforations, and short turn downs right out of the mufflers, still just a foot or so ahead of the rear axle. I got them in, and started it up - wow, what a difference. It had a deep throbbing Rrumble (mild cam in the engine), and when I got on it, it sounded great, nice deep growl going down the road at loud pedal, but really mild at cruise. The first time I took it to the local mall, I set off most of the car alarms in the parking lot. I was pretty pleased to get that result for so cheap. In general, though, the larger the tail pipe tubing, and the longer, the deeper the tone at the tip will be; smaller tubing will raise the note of the tone and introduce rap in a full length tail pipe. "H' and "X" pipes will smooth out the pulses and reduce perceived rumble, but may nor may not affect the tone. So, I guess the moral of my story is, you can't really tell what you're going to get until you open the box of chocolates.

    .
    34_40 and mprevo like this.
    Rrumbler, Aka: Hey you, "Old School", Hairy, and other unsavory monickers.

    Twistin' and bangin' on stuff for about sixty or so years; beat up and busted, but not entirely dead - yet.

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