Hi tclederman and all,

Here's additional info, with locations for each number as outlined in the numbered photos linked by tclederman here:

Photo #2 Block Date Casting Code -- CON 4 G298

(G29=July 29, so is the "8" 1958? 1948?)

Photo #3 Engine S/N -- dis. pad is N375583 Cal

(Not sure what this means except that the 'cal' means it's a California s/n, as per cletis - is there any more information in the other part of the number?)

Photo #4 -- B2 887 066 570 but didnt take valve cover off

(no idea what this tells me)

Photo #6 Casting Head Code -- 3701887 gm3

(I still can't find this particular code on any of the normal casting code sites - any ideas?)