sub57,

I sent a reply to your Parts Wanted ad with other info based on an initial search of the GM Parts books I had at hand, not knowing about this casting number.

Now that you provided this casting number info, it turns out that that part has had a number of different GM Part numbers assigned to it.

Original GM# 3697701 shows as both the casting number and part number, after the originally listed GM# 3718011 (casting# 3707340) appears to have been replaced by it in early 1958 (I think?). Was listed for 1955-62 and some early 1963 1/2 ton axles.

GM# 3697701 was later replaced by GM# 3854311 (same part and application for 1955-62 and some early 1963 1/2 ton axles) - just a new part number.

GM# 3854311 was later replaced by GM# 3867832 (again same part and application as before) with another new number.

GM# 3867832 has since been removed form the parts catalogs as no longer available.

On a bit of good news, check out your Parts Wanted ad as I have added a new reply with a possible source I found after all this research.

Hope this is clearer than mud.

Dan

~ Dan
1951 Chevy 3 window 3100
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