In the old days these sixes were good to about 60 K until they started to smoke, or that is what my impression is. I am not talking about heavy duty use. I wonder now with modern oil and maybe a PCV system if they would last a little longer.

1951 GMC 1 Ton Flatbed -- It is finally on the road and what a great time I have driving it!
1951 1 Ton Completed

My Chevy Master 4 Door is on the Road!