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Technical C10 header help needed

Discussion in 'The Hokey Ass Message Board' started by 46poncho, Nov 14, 2020.

  1. 46poncho
    Joined: May 24, 2009
    Posts: 248

    46poncho
    Member
    from Indiana

    I have a 66 c10, I put a sbc in it,I had a set of headers on it but in the location the motor mounts bolted up, the passenger side header hits the a arm. There is not a ton of room due to starter, a arm, and frame. I saw some rear swept headers on computer looked like they might work. Has anybody used them? The photo shows the space on passenger side, the center drop headers are the ones I pulled off. Thanks Screenshot_20201112-194549_Facebook.jpeg 20201114_120249.jpeg 20201114_133959.jpeg Screenshot_20201114-135602_eBay.jpeg

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  2. Pete Eastwood
    Joined: Jul 27, 2011
    Posts: 1,105

    Pete Eastwood
    Member
    from california

    Wouldn't it be best to just order a set of headers made for a '66 C-10 ?
     
  3. squirrel
    Joined: Sep 23, 2004
    Posts: 50,899

    squirrel
    Member

    you have the engine in the wrong place. The frame brackets for the motor mounts are supposed to be in the rear position. The 67-72 trucks had the engine in the forward position, like yours is set up.

    at least that's what it looks like from what I can see. If you hold the camera back a bit further so we could see more of the engine, frame and firewall, might be easier to see.
     
  4. Budget36
    Joined: Nov 29, 2014
    Posts: 8,384

    Budget36
    ALLIANCE MEMBER

    Had a set in a 66GMC with SBC, headmans, as I recall. Should be the same?
     

  5. 46poncho
    Joined: May 24, 2009
    Posts: 248

    46poncho
    Member
    from Indiana

    If the engine were in the rear holes only 1 of the lower mount holes line up.
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  6. 46poncho
    Joined: May 24, 2009
    Posts: 248

    46poncho
    Member
    from Indiana

    It would move the engine back approximately 1.5 to 2 inches

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  7. squirrel
    Joined: Sep 23, 2004
    Posts: 50,899

    squirrel
    Member

    I can't see what brackets you have. There are several different ones, for different engines in different years. The 292 six engine has one mount forward, one back. Both mounts on the 230-250 from 63-72 are back. Both mounts on the V8 in 63-66 are back, but in 67-72 are forward. It's complicated.
     
  8. 46poncho
    Joined: May 24, 2009
    Posts: 248

    46poncho
    Member
    from Indiana

    I bought the aftermarket tube style mounts. The original was a 250
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  9. Mr48chev
    Joined: Dec 28, 2007
    Posts: 30,828

    Mr48chev
    ALLIANCE MEMBER

    When I had the 350 in it I had a set of Patriot headers on my 71 GMC The right side came down like this as viewed from the bottom side
    [​IMG]

    It's too dark now to go out and get a photo of the header.
     
  10. jaracer
    Joined: Oct 4, 2008
    Posts: 1,468

    jaracer
    Member

    I've got Headman headers on my 64 C20. They fit fine with no interference. They don't look anything like your pictures. I went on their web site and it appears they only go back to 1967 now.
     
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  12. squirrel
    Joined: Sep 23, 2004
    Posts: 50,899

    squirrel
    Member

    through 66 truck used straight drop rams horns, the 67 up trucks used the angled back rams horns to clear the A arm, since they moved the engine forward.
     
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  13. Mr48chev
    Joined: Dec 28, 2007
    Posts: 30,828

    Mr48chev
    ALLIANCE MEMBER

    Last edited: Nov 15, 2020
  14. 46poncho
    Joined: May 24, 2009
    Posts: 248

    46poncho
    Member
    from Indiana

    It may be. When I put the engine in the aftermarket mounts have 2 holes in top and 2 in bottom, I had it toward the back at first, only 1 hole lined up on the bottom, when I moved it forward both all holes lined up, so that's where I put it.
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  15. 46poncho
    Joined: May 24, 2009
    Posts: 248

    46poncho
    Member
    from Indiana

    Thanks for all the help, I found a video on YouTube that confirms the forward holes are for 67 and later, the rear holes are for 60-66. You learn something every day. I am glad we have the hamb and great people willing to help!

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  16. 46poncho
    Joined: May 24, 2009
    Posts: 248

    46poncho
    Member
    from Indiana

    The center dump headers will definitely not work. Moved the engine back to the rear position, headers are setting on the a arm and very close to the starter and trans pan. Not sure any center dump exhaust will work, not sure there is enough room to bend a pipe out???

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  17. 46poncho
    Joined: May 24, 2009
    Posts: 248

    46poncho
    Member
    from Indiana

  18. squirrel
    Joined: Sep 23, 2004
    Posts: 50,899

    squirrel
    Member

    Why do you have an aftermarket crossmember for the mounts, instead of the original mount brackets?
     
  19. 46poncho
    Joined: May 24, 2009
    Posts: 248

    46poncho
    Member
    from Indiana

    I bought the one I think it was brothers truck for 6 cyl to v8 swap. Bolt up no drill etc... came with new mounts and all hardware. Did not know old perches would work
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  20. squirrel
    Joined: Sep 23, 2004
    Posts: 50,899

    squirrel
    Member

    do you still have the old perches?
     
  21. 46poncho
    Joined: May 24, 2009
    Posts: 248

    46poncho
    Member
    from Indiana

    Yes, the new one line up ok, they move the engine back
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