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Technical 455 buick exhaust manifolds

Discussion in 'Traditional Hot Rods' started by 410merc, Jun 16, 2017.

  1. 410merc
    Joined: Mar 31, 2014
    Posts: 69

    410merc
    Member

    hello everyone , i'v been putting a 455 buick in my modal a ford , and I run into a snag ,the passenger side manifold sticks out so far to the side at the rear of the engine , so here 's my question did buick ever make any other type manifold , I don't want to build headers if I don't have to , I need ideas
     
  2. Engine man
    Joined: Jan 30, 2011
    Posts: 3,476

    Engine man
    Member
    from Wisconsin

    I don't know for certain but I assume it was turned out to allow for the automatic transmission dipstick and air conditioner box. Maybe somebody else knows. Could it be cut and welded to turn it down?
     
  3. gimpyshotrods
    Joined: May 20, 2009
    Posts: 18,031

    gimpyshotrods
    ALLIANCE MEMBER

    Get someone else to build you headers.
     
  4. Engine man
    Joined: Jan 30, 2011
    Posts: 3,476

    Engine man
    Member
    from Wisconsin

    410merc likes this.

  5. Stonebird
    Joined: Dec 19, 2008
    Posts: 109

    Stonebird
    Member

    The above chart shows a 68 400/430 being different. This is a 68 430 out of an Electra in my build. Best pic I have of it right now. Don't know if you can see enough to tell if it is different. I can get a better pic of it tonight if that would help. Let me know what angle you need to see it from. I guess I also have a 455 at home too, I could see if I can tell if there is a big difference.
    68 buick 430.JPG
     
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  6. Stonebird
    Joined: Dec 19, 2008
    Posts: 109

    Stonebird
    Member

    IMG_0591.JPG IMG_0592.JPG IMG_0593.JPG
    First pic is 455. Heater box makes it hard to see much. Other 2 are the 430. I couldn't tell much difference from the view I have. Hope this helps.
     
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  7. southcross2631
    Joined: Jan 20, 2013
    Posts: 4,389

    southcross2631
    Member

    Try a driver side manifold on the pass. side so it exits forward.
    I don't blame you, I would not want to build headers. Better performance , cooler looking, what a hassle.
     
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  8. Stonebird
    Joined: Dec 19, 2008
    Posts: 109

    Stonebird
    Member

    IMG_0563.JPG If you can zoom in on this pic I suspect the drivers side would exit right into the motor mount. Do you have room to offset the engine to the driver side?
     
  9. 410merc
    Joined: Mar 31, 2014
    Posts: 69

    410merc
    Member

    that's just what I thought , it would be so much simpiler this way
     
  10. 410merc
    Joined: Mar 31, 2014
    Posts: 69

    410merc
    Member

    oh ,thankyou so much , I think it helped ,my manifold has part no 1383648 and that makes it a 68 -430 manifold ,but for some reason mine sticks out way more than yours ,I wonder what manifold you have
     
  11. 410merc
    Joined: Mar 31, 2014
    Posts: 69

    410merc
    Member

  12. Stonebird
    Joined: Dec 19, 2008
    Posts: 109

    Stonebird
    Member

    Mine came out of a very low mileage 68 Electra so it should be the original manifold. Maybe it's camera angles making them look different.
     
  13. right side manifolds 455 430 - 1238094
    1238054
    1383648
    cheaper to make up a set of headers, start with a used set of headers for the flanges, get shorty SBC headers and combine them.
     
  14. 410merc
    Joined: Mar 31, 2014
    Posts: 69

    410merc
    Member

    tried that I'm into the motor mount bigtime if I switch sides
     
  15. sdluck
    Joined: Sep 19, 2006
    Posts: 2,703

    sdluck
    Member

    Take a header gasket and see if it is close to any other gasket.
     
  16. southcross2631
    Joined: Jan 20, 2013
    Posts: 4,389

    southcross2631
    Member

    You do know you can cut and reweld cast iron exhaust manifolds ? I couldn't find a right side manifold for an original Boss 302 Mustang and the 351 Cleveland manifold I had hit the bellhousing . So cut a notch in it and welded it back up. Looked factory until you took it off and turned it over . Used my stick welder and nickel rod.
     
  17. ididntdoit1960
    Joined: Dec 13, 2011
    Posts: 1,011

    ididntdoit1960
    Member
    from Western MA

    is there enough clearance to angle mill the manifold to tip it in some....
     

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