OK, I got the valve covers off. First from the above link provided by Bob, they look like style F. The numbers were a little hard to read, but I think I have it. 3(or 8)78246(or8)1. One the variables, the castings are a little tough to read, but the first number is pretty clearly a 3 on the drivers side and an iffy 3 on the passenger side. I am thinking 3. On the drivers side the second questionable number looks like a 6, and on the passengers side I am pretty sure it is a 6 as well after a second look. my first impression was that it was an 8. Also there is a large GM in the middle with a 5 I think under it. and off to the side of the casting number there is a J298. also some other smaller numbers kind of cock eyed next to the casting number. I have a digital camera if that would help. Have not crawled under fro the trans numbers.

If this does turn into a rare engine...any thoughts on value. I am wondering if it has ever been entered and if so what the bore would measre. How would be the best way to measure it (tool)...maybe I will pull a head and mic it. I just don't have the mike and would have to buy one. anyway, any help as always is hugely appreciated.

Buzz