They are usually around 3 psi. My 47 manual gives a range of 3.5 to 6.5 but the later manuals have the top figure less than that.


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!