On the road,
Dropped the pan today and found 2 raised lumps in between the 2nd and 3rd cam lobes. The lumps looked like poorly stamped 6's or 9's. On the other side of the camshaft in this same area was a slightly smooth section with a set of 3 stamped numbers (736).
Between the 3rd and 4th cam lobes I found what I would consider the casting date of C31 (March 3, 1961). This number had the characteristic round head screw in front and flat head screw toward the rear. Many thanks.
Also checked out your website and truck. Delux all the way.
