Differential ID ?

[roger55]

Originally Posted by 67GMCkid

Has anyone ever set down and figured out what the difference is in a 64-66 vs the 67-69 GMC drums ? The 67 and later can be found about anywhere... they are also 11x2 and 6 lug...

Yes. The widths are different. The later ones fit on my 65 axle but the shoes overhang outside the drum a little. They will work but it's not an ideal fit.
The Waggoneer drums are a better way to go. The machine shop work is inexpensive. The axle flange circle needs to be enlarged. And, the lug holes need to be drilled out from 1/2" to 9/16" to fit over the shoulders of the lugs.
Details:
http://www.67-72chevytrucks.com/vboa...=Dana+44+drums