[cericd]

Thanks. I looked it up and found the same info in my 1946-1972 Parts Manual. I haven't gotten good at deciphering some of the info though. So does this mean that a 1970 1/2 ton pickup could have had either a 1-1/4" snap in type (rubber?) part number 274083 or a demountable w/2" (brass?) part number 273476 valve stem? So I see that the A.R. after 274083 in my image means As Required. Required by what? Higher tire pressure?