Did some research on this today in regards to my Valve adjustment thread. Found an article talking about the size of the oversize intake valves. The article quotes McGurk and somebody called California Bill to not exceed 1 and 13/16 diameter valves. The valves I am wrestling with were 1 7/8. McGurk, somewhat of a guru in the old world of hot rodding the 216 apparently marketed the 1 13/16 claiming they were as big as you could go.


So for this particular case I would just go standard.


1946 1-ton Panel
1952 1-ton Comml. W/Grain Body