Quote:
Originally Posted by gimmy 64
ihave a 64 gmc I went through this same thing. found out the drums for 72 chevy blazer 4 wheel drive works. these have been on my truck for about 2 years. $50 bucks at autozone. I did not have to drill the lug holes either?
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I was thinking that you could possibly have a dangerous issue here.
Here's a photo of why the lug holes have to be made larger:
As you can see, the shoulders of the lugs protrude through the axle flange and the holes in the drum must go over them.
If you put your 2067DGS drums on and they don't go perfectly flat against the axle flange, then your lugs would be handling all the torsional and shear stress. The lugs are not designed to handle that stress. They are designed so that the lug nuts will clamp the wheel and drum to the axle flange so that the whole unit is in a single shear condition. If not, your lugs could all shear off at the same time resulting in wheel loss and the possible loss of control of your truck.
If you have this condition, it's not a matter of it will fail but when. I suggest you check it to make sure.