Packard Forum Index » Pre-War (1899-1942)

Interesting that they would make the rod cap bolts smaller for 1940 than the earlier ones, then larger again for 1946! I don’t recall the sizes exactly but it seems to me that mine was 1/2” while 1946 was 9/16” or maybe mine was 7/16” and 1946 was 1/2”. Whatever the sizes, they were only about 1/16” apart but it changed the torque spec so when I used what was in the 1946 section of the Motor’s Manual, the bolts would stretch a little each time I got them to the specified torque!