Casting numbers on 37 Rocker Boxes

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  • elvisp1956
    Member
    • Jan 2017
    • 43

    #1

    Casting numbers on 37 Rocker Boxes

    What are the correct casting # on 37 rocker boxes, thanks!
  • 1950Panhead
    Senior Member
    • Jun 2010
    • 343

    #2
    No date codes in 37, codes came in 39.

    Comment

    • Chris Haynes
      Curmudgeon
      • Jul 2002
      • 5939

      #3
      All years have the same part number on them. Date codes didn't start until mid 1938 production.
      Be sure to visit;
      http://www.vintageamericanmotorcycles.com/main.php
      Be sure to register at the site so you can see large images.
      Also be sure to visit http://www.caimag.com/forum/

      Comment

      • elvisp1956
        Member
        • Jan 2017
        • 43

        #4
        Thank you!

        Comment

        • Speeding Big Twin
          Senior Member
          • Mar 2010
          • 429

          #5
          According to Bruce Palmer’s 37–64 SE, all 1936–47 front rocker housings have casting number 7049-352. However, he says there are at least six sub-types of front housing. Late-1936–37 had the third sub-type.

          Palmer says all 1936–40 rear rocker housings have casting number 7049-35. But there are four versions. Late-1936–37 had the second version.
          For 1941–47 rear rocker housings there were at least two versions but it seems they both had casting number 7049-41. (Some 1941–47 rear housings have two casting numbers on them: 7049-41 and 7049-35.)
          Eric

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