I just so happen to know where a 6400 Chevy is sitting.. says "Chevrolet" and just below it says "6400".
I read on antiquechevytrucks.com that in mid 1952 GM stopped using 3100, 3600, 3800 emblems on side of hood. However, CHEVROLET emblems are used the entire year.
Don't know if that applied to the bigger series trucks (like the 6400) or not.. but I guess if '48bigtrucks has a 4400 on the side, then it dosent apply to the bigguns.
