Casting numbers on 37 Rocker Boxes

[elvisp1956]

What are the correct casting # on 37 rocker boxes, thanks!

[1950Panhead]

No date codes in 37, codes came in 39.

[Chris Haynes]

All years have the same part number on them. Date codes didn't start until mid 1938 production.

[elvisp1956]

Thank you!

[Speeding Big Twin]

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