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J10 Header Option For 3in Exhaust?

Discussion in 'Jeep Truck and FC Tech' started by 70cj5134f, May 9, 2020.

  1. May 9, 2020
    70cj5134f

    70cj5134f Member

    East Tn
    Joined:
    Aug 18, 2018
    Messages:
    736
    I crashed my hot rod, gremlin x, 550 hp 401. Putting the 401 in my 82 j10.
    Gotta have 3in exhaust! My long tube headmans exit so close to frame and Tranny,
    I don't think they can fab 3in to attach? Was thinking shorty headers might work?
    Anyone got 3in, or even 2.5 in duals from headers?
    My current 360 exits through 2in. Dumps in front of rear wheels.
    Help?
     
  2. May 14, 2020
    colojeepguy

    colojeepguy Colorado Springs 2019 Sponsor

    At the foot of...
    Joined:
    Apr 4, 2010
    Messages:
    4,913
    Most headers have 3" collectors and the reduces take them down to 2 1/2. You just need to find some reducers that are 3".
     
  3. May 20, 2020
    70cj5134f

    70cj5134f Member

    East Tn
    Joined:
    Aug 18, 2018
    Messages:
    736
    My new coated come with 3in! Problem is clearence above crossmember?
    May have to go under.
     
  4. May 26, 2020
    colojeepguy

    colojeepguy Colorado Springs 2019 Sponsor

    At the foot of...
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  5. Jun 7, 2020
    70cj5134f

    70cj5134f Member

    East Tn
    Joined:
    Aug 18, 2018
    Messages:
    736
    That's an most excellent idea(a little pricey though) !
    I'm
    going to try 2.5 back to mufflers(3in flowmasters), then 3 out the side.
    My old system had restrictive (compared to FM), mufflers, and non mandrel bent ells.
    This should flow equally well?
    Ps-the truck is progressing, have BM shifter in floor and working.
    Replaced steering box, and shaft.
    Built camo door panels, and headliner.
    Repaired tank and fuel gauge now works.
    Replaced TC output seals.
    Rebushed front sway bar and links(This dang thing corners now like on rails with the
    235/70s on!
    Still gotta rebuild tilt colum , parts on back order.
    Scrapped my winch front bumper, and used my gremlin rear!
    Trying to repair all I can before engine comes out
     

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