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Thread: Tri-Y header design?

  1. #1
    Registered Member Nick_nl's Avatar
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    Tri-Y header design?

    Hi Guys,
    for my car id like a good set of headers that are street oriented and don't cost much ground clearance.
    The frame horns are still in use so 4-1 long tube headers would hang really low.
    Also i notice that most headers are for a 350+ engine and have reasonably large primary tube.
    I'm looking for more street oriented manners.
    Using the various calculators i keep finding that the primaries should be less than 1.5" OD.
    Are there headers that would fit the bill? Peak torque at 3500 and usable for a 283.

    thanks

    Nick

  2. #2
    Registered Member chevynut's Avatar
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    Seems to me that you might want to look at using stock cast iron manifolds or a 3/4 length header for your situation. I don't know if I've ever seen headers with smaller than 1 5/8" tubes. Something like these should work...

    https://www.speedwaymotors.com/1955-1957-Small-Block-Chevy-Chassis-Headers-AHC-Coated,36775.html?sku=930C7H&utm_medium=CSEGoogle& utm_source=CSE&utm_campaign=CSEGOOGLE&gclid=Cj0KCQ iAg4jSBRCsARIsAB9ooavJ5qyMHjZjYweJbq_uwLkSswvE-WL9VnqW-h-KH-FqMU1yLDs9eAkaAkiKEALw_wcB


    Here's some inexpensive stainless ones. Check the details on any of these before buying.

    https://www.ebay.com/itm/Stainless-1955-1956-1957-Small-Block-Chevy-Chassis-Headers-/302066606910?_trksid=p2385738.m4383.l4275.c10

    https://www.speedwaymotors.com/1955-...ess,61101.html
    Last edited by chevynut; 12-26-2017 at 01:34 PM.
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  3. #3
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    Thought about 2.5 outlet rams horn manifolds, Speedway has a good price on them.

  4. #4
    Registered Member Nick_nl's Avatar
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    Currently I have the 2 inch rams horn manifolds installed.
    The suggested 3/4 length headers look nice, but the Trickflow cylinder heads are angle plug.
    That does complicate it a bit. ☺️
    Diy would also be a good solution.

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