Big Block K Frame Identification

Big Block A body Tech

  1. Jim Lusk

    Jim Lusk Well-Known Member

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    Still expensive, but better. I saw one go for $75 at Spring Fling a couple of years ago. That was AFTER I had told the seller what he had...
     
  2. musclecargeek

    musclecargeek Member

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  3. AndyF

    AndyF Well-Known Member

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    That is a SB V8 K frame just like that ad says. You need to go watch Jim Lusk's video over and over until you understand the process.
     
  4. Fast340cuda

    Fast340cuda Well-Known Member

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    The mounts on that k frame look like they have been cut off and rewelded in the big block position to me.
     
  5. Jim Lusk

    Jim Lusk Well-Known Member

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    That is an ORIGINAL Direct Connection K-member.
     
    • Agree Agree x 1
    • musclecargeek

      musclecargeek Member

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      Ok, I watched your video (thanks for sharing with everyone) and now I believe I can tell BB K-Frames. eBay one above was a Direct Connection Big Block as you stated. Sold now so I am out of luck.

      See attached photo. Red Circle area on a DC K-Frame will be closed up by metal plate and the red arrow area of the spool mount support will have a straight triangle side. A home made V8 to BB K-Frame wont have a straight triangle side where the red arrow is and will be set back where you cut the mount to move it back.

      Also, I was concerned about what you said in your video about the strut rod holes being oval and the shimmy at high speeds. Was that pertaining to that particular K-Frame or inherit to DC BB K-Frames? Wasn't Sure.

      s-l1600b.jpg
       
    • Jim Lusk

      Jim Lusk Well-Known Member

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      That was that K-member only. The fit was sloppy on the reinforcing plate.

      The tell on the DC is the plate you mention along with a similar one other side and the piece welded from the back of the driver side saddle down to the main body of the k-member. The part with the arrow is on all 73-76 V8 k-members.
       
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