I am still trying to locate the casting number. I believe that it is about a 7 digit number probably starting with 37. I have started with Gunk. There is somthing on the block that is behind the starter. I saw a picture of an engine on another forum that looked like it had some casting numbers in that location. I have begun to clean the area, but haven't gotten to the readable stage yet. However, what I thought I saw didn't look like a nice evenly spaced run of numbers. It seemed like there were a couple of digits followed by a space then a couple more. I thought the second group might be H3. That is just a guess right now. I have been spending all my daylight hours putting brick on teh front of my garage, I work a little on the truck after dinner when it is getting dark and cold. Are there any other possible locations for casting marks? Anything possible on the driver's side?
