1. moparstud440

    moparstud440 Well-Known Member

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    What size header would you guys use for the following engine combo. It is strictly a race only engine. Car is a 73 Duster, fenderwells are not cut and I don't want to have to cut them.

    408
    12:1
    Trick Flow 190 heads
    Victor 340 intake
    .550-.571 SFT cam (I know it's small, will probably get something larger down the road)
    750 carb (have 850 that will try as well)

    Don't plan on turning the engine over 6500 rpm. Car weighs 3250 with driver. Currently I have a set of Doug's 1 5/8". Trying to determine if a larger tube size would help any or not.
     
  2. Demonracer

    Demonracer 71 Demon 00 Ram 16 Chrysler 300S 05 Caravan FABO Gold Member

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    I'm running an older set of 1 7/8" Hooker headers. I hunted long & hard to find a set to replace my existing headers which were also 1 7/8" of unknown brand. I'm running a 416 with a solid roller .690-.660, Edelbrock heads w mild porting, 750 DP/4 point idle circuit & going through the traps at 6400-6600 with a 2500 lb car on 29.5 x 10.5 slicks.
     
    Last edited: Jan 11, 2021
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    • moparstud440

      moparstud440 Well-Known Member

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      Hows the fit of the headers and what ET are you going?
       
    • yellow rose

      yellow rose Overnight Sensation FABO Gold Member

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      1.875 primaries, 3 inch collector 20-24 inches long if running open heads, 3.5 inch collector if you have mufflers. The primaries should be 28-32 inches long.
       
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      • B3422w5

        B3422w5 Well-Known Member

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        You have a very similar combo to what i have in the works for racing this upcoming season.
        I too have the Dougs headers.
        I had them on my 360 with eddies that was 10 to 1
        For now going to live with them on my 418 with same eddie heads.
        Collector wise, i went from 3 to 3.5 inch collectors on a W5 motor i had that went well into the 9’s, and saw absolutely nothing making the swap
         
      • Demonracer

        Demonracer 71 Demon 00 Ram 16 Chrysler 300S 05 Caravan FABO Gold Member

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        The set I have are slip joint, race only headers. I run a front & mid plate, the headers fit well it just takes awhile to figure getting them in. I was running 10.30's with my iron headed 408, plans are to run mid 9.00's with the 416.
         
      • yellow rose

        yellow rose Overnight Sensation FABO Gold Member

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        The only Hooker 1.875 A body headers I’ve ever seen are the 5303’s. They are about impossible to find any more. They are a MoFo to install, and they only go in one way. You can’t shortcut.

        When they are one, they fit incredibly well. You can get to all the plugs and they aren’t too low for what they are. Will you have the same ground clearance as you do with 1.626 tubes? No. But I run them on the street and I don’t drag them and my front end is slightly lower than OE.

        If you can find a set, snatch them up right quick. TTI makes an 1.875 header, but their collectors suck. So you really need to address that. Plus, they weld the collectors on IIRC. No reason to do that. But they do it.
         
      • rumblefish360

        rumblefish360 So close, yet so far away FABO Gold Member

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        On the tti headers, the collectors are short and can use an extension. You can purchase these easy from Summit, Jegs, etc....

        If you can dyno the engine, purchase two sets of collectors, cut down or add on to the piles length on the dyno pair until you figure out where it works best.
         
      • 70aarcuda

        70aarcuda Master Hoader of SBM FABO Gold Member

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        We are using the TTi 1 7/8 with 3 1/2 collector. I have extensions on them also.
         
      • yellow rose

        yellow rose Overnight Sensation FABO Gold Member

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        I can’t remember...do they have a 3.5 inch collector or did you have to change that out?
         
      • flyfish

        flyfish C8H18+N2O = :-D

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        I have 1 3/4 Headman Hustlers on my 408, but they do have 1 tube on each side that goes out the fender, car runs 10.1.....I would love to see if a 1 7/8 header (same kind) would help me at all, but for the cost, I think I'll just wait till my headers die, lol.
         
      • crackedback

        crackedback FABO Gold Member FABO Gold Member

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      • Demonracer

        Demonracer 71 Demon 00 Ram 16 Chrysler 300S 05 Caravan FABO Gold Member

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        ^^^^^ Those are some nice race only headers, but shipping from Cali to the east coast might be a deal killer.
         
      • crackedback

        crackedback FABO Gold Member FABO Gold Member

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        Yeah but they do break down completely which is nice.
         
      • Demonracer

        Demonracer 71 Demon 00 Ram 16 Chrysler 300S 05 Caravan FABO Gold Member

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        Those are the same basic headers I have for my Demon but I have extension tubes on mine.
         
      • yellow rose

        yellow rose Overnight Sensation FABO Gold Member

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      • crackedback

        crackedback FABO Gold Member FABO Gold Member

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        found another set in the stash of parts. :)
         
      • mbaird

        mbaird mbaird

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        Tubular Automotive in MA makes a nice set of 1 7/8 and maybe 2" .
         
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