Yes, the GM Parts Wiki says it's for a 54-62 1/2 ton except O/D & Posi
Kevin 1951 Chevy 3100 work truck Follow this saga in Project Journal Photos 1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car) Busting rust since the mid-60's If you're smart enough to take it apart, you darn well better be smart enough to put it back together.
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as both the casting number and part number, after the originally listed GM# 3718011 (casting# 3707340) appears to have been replaced by it in early 1958 (I think?).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 Follow this story in the DITY Gallery "My Grandpa Carl's Truck and How it Became Mine" 1966 Chevelle (Wife's Hot Rod) | 2013 Chevy Silverado (Current daily driver) US Army MSG Retired (1977-1998) | Com Fac Maint Lead Tech Retired (1998-2021)
Are you (by chance) thinking of taking pictures and writing notes as you go through the assembly and reinstallation process???
I detect an opportunity for the makings of a very useful Tech Tip!
Looking forward to progress reports and pictures as you may be able to share.
If you run into a question or concern, come on back and ask away! Very sure help will be available pretty quickly.
Dan
~ Dan 1951 Chevy 3 window 3100 Follow this story in the DITY Gallery "My Grandpa Carl's Truck and How it Became Mine" 1966 Chevelle (Wife's Hot Rod) | 2013 Chevy Silverado (Current daily driver) US Army MSG Retired (1977-1998) | Com Fac Maint Lead Tech Retired (1998-2021)
