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Pie Cut Hood Question

Discussion in 'The Hokey Ass Message Board' started by bg, Mar 22, 2008.

  1. bg
    Joined: Jun 23, 2006
    Posts: 21

    bg
    Member
    from USA

    48 Chevy truck hood pie cut


    Its time to pie cut the hood. Can anybody give any info on cutting down a hood about 1 or 1 1/2 inch. My main question is do I need to pie cut the sides "ALL" the way back to the under brace or even go past the brace and stop about 3 inches at the back of the hood?

    I think i understand about all the stress cuts needed to push and pull to get a good flow line.

    If anybody has any info or better pics please let me know...:D:D


    THANKS
    BG
     
  2. pimpin paint
    Joined: May 31, 2005
    Posts: 4,937

    pimpin paint
    Member
    from so cal

    Hey,
    A section of one inch would probably be hard to tell that much was done to the hood. At 1.5-2.0, yeah noticeable, but at 2.5-3.0 you
    may well be back to the rear hood edge with your cuts.
    I'd start with a cut 3/4 the length of the hood back, remove your
    1.5 and see how you like the flow. If the rear of your cut bulges, you
    need more relief cut.
    You could also cut the entire top loose from the bottom of the hood,
    move the top foward, and minumise the amount of relief cuts neces-
    sary to acheve the shape. You will have to add more metal at the rear of the hood to cover the amount you cheated by moving the panel foward, however.

    Swankey Devils C.C.

    "Meanwhile, back aboard The Tainted Pork"
     
  3. bg
    Joined: Jun 23, 2006
    Posts: 21

    bg
    Member
    from USA

    You could also cut the entire top loose from the bottom of the hood,
    move the top foward, and minumise the amount of relief cuts neces-
    sary to acheve the shape.

    I was thinking about this also!!! Just not sure about the patching in and making it look normal.

    I have a DONOR hood that i can rob a patch panel from...


    Thanks
    Bg
     
  4. Belchfire8
    Joined: Sep 18, 2005
    Posts: 1,540

    Belchfire8
    Member

    Tackweld it to the fenders before you cut it. you'll thank yourself later.
     
  5. bg
    Joined: Jun 23, 2006
    Posts: 21

    bg
    Member
    from USA

    I have the hood off the truck but have welded straps across the bottom to make it ridged after cutting.
     
  6. bg,
    I didn't pie cut mine, I did a 5 1/2 inch section and it wasn't that hard. the relief cuts I made were way more than needed.

    have some photo's on "screwing up a good truck (not that good)
     
  7. j-dogg
    Joined: Aug 20, 2005
    Posts: 301

    j-dogg
    Member

    Here's mine i'm working on right now. 3 1/2" taken out, cut the hood in half and slid it forward.
     

    Attached Files:

  8. toxictom
    Joined: Jan 14, 2008
    Posts: 366

    toxictom
    Member

    maybe these pictures can help,found it at metalshapers.org
     

    Attached Files:

  9. Flop
    Joined: Jun 8, 2006
    Posts: 3,885

    Flop
    Member

    heres a decklid i did kinda like a hood .. get ready for some wedling to say the least

    [​IMG]
     
  10. bg
    Joined: Jun 23, 2006
    Posts: 21

    bg
    Member
    from USA

    Which is easier ---- remove top section of hood and move foward and add metal to rear OR pie cut and hinge down with sevral stress cuts


    Do you have to pie cut the side ALL the way back or just to the brace and stress cut up to keep from binding when hinged down.

    My concern is not to KICK up the back of the hood lip that sits on the cowl.

    THE PICTURES HELP!!

    Thanks

    Bg
     
  11. Belchfire8
    Joined: Sep 18, 2005
    Posts: 1,540

    Belchfire8
    Member

    I did that to mine too, it hasn't fit right since. I later found out that usually it's tacked to the fendered befor cutting. My car was painted before I decided to pie cut the hood, maybe yours is too. But I really wish i had tacked it, the side don't follow the fender curves correctly and it rubs slightly at the nose. If I had tacked it on I think it would have been a much better fit later.
     
  12. fab32
    Joined: May 14, 2002
    Posts: 13,985

    fab32
    Member Emeritus

    Give the suggestion of tack welding to hood to the fenders before you cut it serious thought. The fit of the hood between the fenders is a bitch at best and this will minimize the agony.

    Frank
     
  13. I was on a different mission. I sectioned the hood and cowl. then cut straight down ahead of the doors and dropped the cab (channeled) the same 5 1/2 inches to do away with the running boards and lined the bottom of the door with the bottom of the fenders.
    it was alot easier than my mental picture. I'm getting ready to do another one and am going with two hood to gain extra metal to eliminate the added fill strip
     
  14. pimpin paint
    Joined: May 31, 2005
    Posts: 4,937

    pimpin paint
    Member
    from so cal

    Hey,

    You will, in all likelyhood, have to do some "corrective measures" to
    get the front end sheetmetal to line up after all is said and done. A
    4 ton porta-power or friction jack will spread the hood panel in the
    opening. Hell, in a pinch, you could use a come-a-long (carefully) to
    spread the opening. The oem fit wasn't anything to write home about
    , to begin with!
    On the subject of the "kick-up" at the rear of the hood- The greater
    the amount of the pie section taken out the greater the kick-up at
    the rear. If you wind up going over 2.0'', you'll have to remove the
    amount , through the side of the hood, that will drop the back of the hood corespondingly, fitment shouldn't be an issue.

    Swankey Devils C.C.

    "Meanwhile, back aboard The Tainted Pork"
     
  15. bg
    Joined: Jun 23, 2006
    Posts: 21

    bg
    Member
    from USA

    I have it taped off at 1 5/8 inch drop at the front and that looks like a bunch.


    Although the cab is cut 7 inches so it could go more


    Thanks
    Bg
     
  16. bg
    Joined: Jun 23, 2006
    Posts: 21

    bg
    Member
    from USA


    It looks like the fenders can be moved around to make adjustments for a better fit. I have fabricated a new radiator shell and the fender mounts can be adjusted side to side and up and down

    Just my thoughts??

    THANKS
    Bg
     
  17. Send a PM or email to Hotrod51. He is building a 51 Chevy truck with a radical "Bonneville" chop and a louvered pie cut hood. I think he also worked the top of the cowel so the lines would flow. Good guy. He will help you if he can.
     
  18. MEDDLER1
    Joined: Jun 1, 2006
    Posts: 1,590

    MEDDLER1
    Member

    absolutely!!!!!!!this is where i screwed up!im gonna build another soon and painted or not that sucker getting tacked to the fenders,the straps will not work you will loose the curve over the cowl for sure and i believe its a compound curve so it goes both ways,hard to see at first but believe me you WILL SEE IT WHEN YOUR DONE,i put a shitload of hours in on mine and wasted my time.second time will be a charm i hope!
     
  19. bg
    Joined: Jun 23, 2006
    Posts: 21

    bg
    Member
    from USA

    Would it be possible to mock up the front dog house with the front fenders and hood separate from the cab and brace it all up and then tack weld to fenders, then make the pie cut

    I have the cab painted so i want to stay away from the paint job if possible. 20/20 i would have cut hood down before painting anything and tack welded to fenders.

    Thanks
    Bg:)
     

    Attached Files:

  20. j-dogg
    Joined: Aug 20, 2005
    Posts: 301

    j-dogg
    Member

    I didn't tack weld mine, and it turned out fine. In fact it made it easier to chop the hood support and to hammer/dolly it with it off.
     
  21. bg
    Joined: Jun 23, 2006
    Posts: 21

    bg
    Member
    from USA

    J dogg

    What hood did you cut??

    Bg
     
  22. j-dogg
    Joined: Aug 20, 2005
    Posts: 301

    j-dogg
    Member

    The one in the picture at the start of your post. Its on a 51 PU
     
  23. bg
    Joined: Jun 23, 2006
    Posts: 21

    bg
    Member
    from USA

    Here is a couple of pics before and after of the hood chop :):)


    More work to do..............


    Bg
     

    Attached Files:

  24. bg
    Joined: Jun 23, 2006
    Posts: 21

    bg
    Member
    from USA

    Hood BEFORE cut:mad:
     

    Attached Files:

  25. bg
    Joined: Jun 23, 2006
    Posts: 21

    bg
    Member
    from USA

    Hood AFTER cut :D:D:D:D:D:D


    1 3/4 inch pie cut removed from nose.......


    Bg
     

    Attached Files:

  26. j-dogg
    Joined: Aug 20, 2005
    Posts: 301

    j-dogg
    Member

    Thats looking good, did you have to cut the hood support?
     
  27. bg
    Joined: Jun 23, 2006
    Posts: 21

    bg
    Member
    from USA

    J-dogg


    No, I didnt cut the support i just cut the hood skin.


    Bg
     
  28. jmcglynn
    Joined: May 19, 2005
    Posts: 115

    jmcglynn
    Alliance Vendor

    On my stude section I pie cut the hood and slid it forward, then made up a new strip for the back edge to lengthen it. It came out great, nice contours and no "stress cuts". I chopped a 39 buick fastback years ago and did the trunk lid with "stress cuts", it's much harder and you end up with more welding and more bondo.

    Just my two cents.
     
  29. damnfingers
    Joined: Sep 22, 2006
    Posts: 1,287

    damnfingers
    Member

    bg, that looks great....
     
  30. bg
    Joined: Jun 23, 2006
    Posts: 21

    bg
    Member
    from USA

    I thought about doing that but decided i didnt want to make a cut across the top of the hood and then try and hide the welded seam with filler .. my thinking was to make the cuts on the side and it would be easier to blend in filler on sides and less noticeable than the top "FLAT area... JMO


    Thanks
    Bg
     

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