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Chevy Six Banger Straight Dual Exhaust Pipe Size

Discussion in 'The Hokey Ass Message Board' started by Kustom Chief, Jun 15, 2005.

  1. Kustom Chief
    Joined: Sep 21, 2003
    Posts: 778

    Kustom Chief
    Member

    I am in the process of setting up a split exhaust for my 54 Bel Air. I am going to run dual straight pipe from a split in the original down tube until the winter. My question is what size pipe to go with? I want it to sound a bit obnoxious so I am leaning toward a smaller size as possible. I just dont' know how small is too small. I want them to be almost like a full length pea shooter exhaust...You will know the car is coming down the road.

    I know there are a few "buzzin half dozen" cruisers on here.

    Any help would be appreciated.

    Larry
     
  2. Kinky6
    Joined: May 11, 2003
    Posts: 1,765

    Kinky6
    Member

    Hey, Chief, you might want to hold up on the pipes until you can afford to split your exhaust manifold as well. A whole lot of the "buzzin' half-dozen sound" comes from separating the exhaust pulses.

    You could send your stock exhaust manifold to Mike Yoder @ Kansas Kustoms, 316-663-3256, and he can split it for $185. Better yet, send him a good spare manifold so you don't have any down time. Tom Langdon @ Stovebolt Engineering, 586-739-9601, stocks the re-pop Fentons dual manifolds, and multi-carb intakes, also.

    For a 235", you could go with 1 3/4" or 1 7/8" tube. You could run one as a straight pipe, and run a small glass pack as far forward as it will fit on the other. That will get some good raspberries when you wind out 2cd gear around town.

    Yep, more fun than a fart can! Kinky6 :cool:
     
  3. jalopy43
    Joined: Jan 12, 2002
    Posts: 3,085

    jalopy43
    Member Emeritus

    I would split the manifold,and use 1 1/2" straight pipes all the way to the pea shooter tips. Good rappin' Sparky:D
     
  4. Kustom Chief
    Joined: Sep 21, 2003
    Posts: 778

    Kustom Chief
    Member

    Thanks guys. I have a split manifold. I am just not putting it on the car this year. It is something that I am leaving for later.

    Larry
     

  5. Kustom Chief
    Joined: Sep 21, 2003
    Posts: 778

    Kustom Chief
    Member

    I have the back piece of a Clark Manifold and was going to split my stocker for the front. Maybe I should just bite the bullet and spend the $$$ now. These decisions suck.

    Larry
     
  6. ray
    Joined: Jun 25, 2001
    Posts: 3,767

    ray
    Member
    from colorado

    i recently did a ford six using 1 3/4 and 1 1/2 tubing. different sizes cause the ford is a 2/4 split! it's the sickest sounding thing you've ever heard, sick in the good way!

     
  7. mugsy
    Joined: May 18, 2005
    Posts: 277

    mugsy
    Member
    from San Diego

    I've got 1 3/4" dual on my 292 with glasspacks. Also have long tube headers which helps to get a cool sound. It sounds awesome when I romp on the throttle. 1 1/2" duals would be good on a stock 235, if that's what we're talkin'.
    Oh yeah, and definitely split your manifold or get the cast iron headers from Langdon's. I did what you're planning on my Pontiac 239 and the sound was not much improved.
    -David
     
  8. Kustom Chief
    Joined: Sep 21, 2003
    Posts: 778

    Kustom Chief
    Member

    Langdon's only has Fenton's for 235's. I was thinking about just getting the kit from National Chevy for $600. Fenton's Steel Packs, pipes, etc. I know it is a lot of money but my exhaust guy is not longer around and I don't know anyone in the Philly/Baltimore area that bends exhaust tubing.

    Mugsy, Saw your building a 54 Chieftain. Here's mine....

    [​IMG]

    Larry
     
  9. chopolds
    Joined: Oct 22, 2001
    Posts: 5,953

    chopolds
    Member
    from howell, nj
    1. Kustom Painters

     
  10. burger
    Joined: Sep 19, 2002
    Posts: 2,347

    burger
    Member
    from burbs

    larry,

    i just had the exhaust on my dodge done by penn brake & muffler in pennsauken, nj (10 minutes east of the intersection of rt 130 & rt 168). they did decent work for a lot less than i was expecting. if you decide to go there, you should drop by for a beer as i'm only a few minutes from their shop.


    ed

    ps- pm caffiene. his dad owns a muffler shop in west philly. i was going to try him out, but decided to go with the local guys instead.
     
  11. Kustom Chief
    Joined: Sep 21, 2003
    Posts: 778

    Kustom Chief
    Member

    Thanks Burger. My dad lives over there. He is down south by Harrisonville. I'll give them a call.

    Larry

     
  12. 66straight6
    Joined: Oct 25, 2011
    Posts: 18

    66straight6
    Member

    What ford engine did you split and what were the details the exhaust on the 2/4. which had the 1 3/4 and which had the 1 1/2 pipes? did yu use the falcon/mustang 170-200 manifold?
    my email is nicklopick@gmail.com if your interested in sharing a video or any info. thanks.:)
     
  13. engine138
    Joined: Oct 5, 2007
    Posts: 1,937

    engine138
    ALLIANCE MEMBER
    from Commack NY

    Mine set up like this 2"
     

    Attached Files:

  14. JT Apperson
    Joined: Jul 12, 2010
    Posts: 215

    JT Apperson
    Member
    from va

    Kustom Chief.....I'm using Tom Langdons Williams split manifold on my 56 chevy stovebolt 235 along with 2 carter-webers on offy intake. 1and 1/2" pipes no mufflers. Sweet sound only a 6 can make. Good luck...JT
     
  15. SlickRick83
    Joined: Mar 9, 2009
    Posts: 185

    SlickRick83
    Member
    from merced

    On my '54 I have the stock mainfold split and blocked. For the pipes I used 2" pipe all the way out the back. To me thats the best sound.
     
  16. StefanS
    Joined: Oct 7, 2013
    Posts: 1,098

    StefanS
    Member
    from Maryland

    It's an old thread but still relevant. How much does pipe diameter affect the sound. I'm thinking of doing a split manifold with factory tailpipes (1 7/8") and no mufflers. Right now I have the factory single exhaust out of the back with no muffler...it sounds deep but "kinda" quiet. My other thought is a split off the downpipe to functional lakes pipes. Any thoughts?
     
  17. fsae0607
    Joined: Apr 3, 2012
    Posts: 871

    fsae0607
    Member

    Smaller diameter = More "rap', higher pitch.
    Bigger diameter = Less "rap", lower pitch
     
  18. barney rice
    Joined: Jul 15, 2017
    Posts: 1

    barney rice

    on my old 54chevy Bel-Aire 2 door sedan with a 235 block in it dualed out with 1&3/4 inch pipe and 18 inch glass packs for a cherry sound you will here it down the block and way around the corner
     
  19. paintman27
    Joined: Apr 23, 2011
    Posts: 287

    paintman27
    Member
    from new jersey

    Custom stainless split headers 292. 2 1/4 pipes back to 19" brockman mellow tones.
    [​IMG][/URL]

    [​IMG][/URL]
     
  20. buick bill
    Joined: Dec 18, 2008
    Posts: 549

    buick bill
    Member
    from yreka;ca

    View attachment 3757782 View attachment 3757783 View attachment 3757782 View attachment 3757782 View attachment 3757783 View attachment 3757782 View attachment 3757782 View attachment 3757783 View attachment 3757782 View attachment 3757783 I just split the manifold on my 292 . sounds nothing like my 235 from back in the day . had straight pipes . not that loud . no rap . put 16 inch glass pipes . still no pop .what gives . split 3 and 3 . 2inch pipe . mufflers on rear half??? I have 3/3 split on my 230 flat 6 dodge . sets of car alarms , and breaks windows!!
     
    Last edited: Dec 28, 2017
  21. StefanS
    Joined: Oct 7, 2013
    Posts: 1,098

    StefanS
    Member
    from Maryland

    I could be wrong but maybe the 2:35 sounds different because it has the siamesed exhaust ports and the 292 has individual ports
     
  22. buick bill
    Joined: Dec 18, 2008
    Posts: 549

    buick bill
    Member
    from yreka;ca

     
  23. buick bill
    Joined: Dec 18, 2008
    Posts: 549

    buick bill
    Member
    from yreka;ca

    anyone else have a idea on this subject . anyone split a 292 and had good sound .is it possible I put my packs to far back . seems like when they wher straight , should have made lots of popping noise!! DSCF4128.JPG
     

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