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Dual exhaust headers- what brand do you have?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by FWP, Dec 11, 2001.

  1. FWP

    FWP CRS

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    Got a set of Thorleys that don't fit right, I'm sending em back. Anybody running 300Y headers? The 364Y's I have are for a single exhaust with a Y pipe. What a bummer, been waiting to get wheeling again, new motor install and all, now on hold AGAIN[​IMG]

    <a target="_blank" href=http://coloradok5.com/gallery/75K5>http://coloradok5.com/gallery/75K5</a>
     
  2. slider

    slider 1/2 ton status

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    I am running the Flow tech after burner header, works well, but has the typical leaks, The headers I really want are made by Stans Headers, they are located near Seattle, Wa. These are the best headers I have seen, They have swivel collectors no gaskets, They use a ball and socket type collector, The flange at the head is not o ringed it is flat, welded then ground down. My buddy has a set, they are awsome, Website is www.stansheaders.com. They are spendy but you will have probley the best header on the market in my opnion
     
  3. 84_Chevy_K10

    84_Chevy_K10 Banned

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    I have Dynomax Jet-Hot coated. No problems except rust, which Jet-Hot will take care of for free.

    Tim
    '84 Chevy K10, lifted, loud, fast, and 3/4 ton axles
     
  4. FWP

    FWP CRS

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    Checked out their site- http://coloradok5.com/gallery/75K5
     
  5. FWP

    FWP CRS

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    Tim, do you have a model number? Does the passenger side hit the shaclke at all? Thanks for any info.

    Fred

    <a target="_blank" href=http://coloradok5.com/gallery/75K5>http://coloradok5.com/gallery/75K5</a>
     
  6. Pugsley

    Pugsley 1/2 ton status

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    I've got Hedmans, no problems to speak of, except for the ever present rust.

    ......And knowing is half the battle
    <a target="_blank" href=http://pugsley.alloffroad.com>pugsley.alloffroad.com</a>
     
  7. MudNurI

    MudNurI 1/2 ton status

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    I know they are dynomax, but other than that I haven't a clue- personally I haven't a clue what they even do, so I don't know if I like them or not-- hows that for honesty!

    --Brandy

    LOVING the new Duramax!!!
     
  8. FWP

    FWP CRS

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    [​IMG][​IMG][​IMG]

    <a target="_blank" href=http://coloradok5.com/gallery/75K5>http://coloradok5.com/gallery/75K5</a>
     
  9. FWP

    FWP CRS

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    Thanks Jeff....No coating on the hedmans, I would guess?? I think I should mention I'm looking for 14 ga. tube, and 3/8" flanges, with chrome or coated, not paint.

    <a target="_blank" href=http://coloradok5.com/gallery/75K5>http://coloradok5.com/gallery/75K5</a>
     
  10. wheelnut46

    wheelnut46 1/2 ton status

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    Sanderson headers makes a cast aluminum header tht is about the size of the stock manifolds. They are somewhat popular with the streetrod crowd, although a little pricey, without the glitz of chrome or Jet Hot coating. I am inclined to believe, though have no proof, that the rigid cast aluminum design will be resistant to flange warping and of course, rust.

    '77 GMC Jimmy
     
  11. solowookie

    solowookie 1/2 ton status

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    3 k5's and 2 different sets of headers;

    Insane Ewok - Hooker Super Comps. these headers have no fitting problems, and good plug access. I can reach every plug with either the socket.

    Jedi Mind Trick - Flow Tech after burners. fitting problem is as follows; if you have an engie oil cooler, which is stock with some k5's, then you will either have to remote locate the filter, or remover the oil cooler and put a normal stem in. the headers interfer and you cannot put on a normal size filter. Plug access is easy, but I have to access one of the plugs with a wrench (from underneath).

    flow tech after burners are ceramic coated, and the finish, I believe, will make these headers last much longer then the super comp's.

    <font color=blue> Jeff - may the force be with you</font color=blue>
    <a target="_blank" href=http://coloradok5.com/gallery/Jeffs-Stuff>link to k5's</a>
     
  12. 502Burban

    502Burban 1/2 ton status

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    FWIW, you can get the SuperComps with the ceramic coating, for more money of course.[​IMG]

    Robb
    '73 GMC Suburban - 502DFI
    <a target="_blank" href=http://community.webshots.com/user/robbrj>community.webshots.com/user/robbrj</a>
     
  13. solowookie

    solowookie 1/2 ton status

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    yea well put it this way the super comps were over $300, and I'm sure ceramic would make them around $400. the flowtech's were $185!

    <font color=blue> Jeff - may the force be with you</font color=blue>
    <a target="_blank" href=http://coloradok5.com/gallery/Jeffs-Stuff>link to k5's</a>
     
  14. fourdays

    fourdays Registered Member

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    I have had Doug Thorleys for ten years. They have worked out great and I have had no problems so far. The flanges are thick and the industrial grade crom finish has held up fine. I live 1/4 mile from the ocean and they still have not rusted on the outside.
     
  15. 502Burban

    502Burban 1/2 ton status

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    I agree, Jeff. SuperComps are <font color=green>expen$ive</font color=green>, but like you said, they fit.[​IMG]

    Robb
    '73 GMC Suburban - 502DFI
    <a target="_blank" href=http://community.webshots.com/user/robbrj>community.webshots.com/user/robbrj</a>
     
  16. jekbrown

    jekbrown I am CK5 Premium Member GMOTM Winner Author

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  17. solowookie

    solowookie 1/2 ton status

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    oh don't get me wrong I really like my hookers, and if I had the extra $$$ when I did the engine I would have done hookers. I have really been impressed with the flowtechs. if this were the other k5 then I'd hate them cuz I've have to relocate the oil filter, or get rid of the oil cooler. I don't mind doing that with my on-road k5, but my other k5 is going to be run a lot harder. the more oil cooler line / remote location filter lines you have the more lines to break and cause problems (paranoid after breaking a cooler line and blowing the engine).

    <font color=blue> Jeff - may the force be with you</font color=blue>
    <a target="_blank" href=http://coloradok5.com/gallery/Jeffs-Stuff>link to k5's</a>
     
  18. Leadfoot

    Leadfoot 1/2 ton status Premium Member

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    I run Hooker Super Comps with Jet-Hot (P.O.S. coating that has been recoated twice). The headers are great but the coating sucks, here's what another company wrote about them......What you got from JET HOT
    (General Electric corp.) was a cheap copy wraped around Madision Ave
    ADVERTISING. 70% Of your purchase was add money and profit and lies. Yours
    True JOSEPH BAXTER B.C.E.

    If you look at my rig from the link below there are pictures of the headers after 6 months of the second coating and I don't even use the rig in winter!

    P.S. why dont the 364Y's fit. I thought they were made for single exhaust but could easily be used for duals?

    See my rig at <a target="_blank" href=http://coloradok5.com/gallery/Leadfoot> click here </a>
     
  19. sinchphoto

    sinchphoto 1/2 ton status

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    i got hooker headers here. ill get some DH next.
     

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