The king pin ripped out of the end of the axle of my 1968 GMC 4500 box truck. Luckily I was going only 1 mph so no catastrophe. The Axle had been resleeved just 2 months before which may have weakened the surrounding metal.... 40 years old and almost 400,000 miles, I can't understand why it should be worn out .... The problem is where to find another Axle
This is a 16'box truck with dual rear wheels, 16,000 lb G.V.W. and a V6-351 engine,
It is an EM 4500 with a 4000 lb front axle. I believe it was called a FO40 solid beam front axle.
The casting number on the axle is GM 3913707
The distance between spring centers is 32"
The spring width is 2.5"
The distance between the king pin centers across the bottom is 65"
The nut from the drag link to the steering arm on the spindle faces up.
Any suggestions of where to find an axle which would work in this truck... or where to find a whole new front end which would fit would be greatly appreciated.
Thanks
Jon Lathrop