Thank Tim:

http://www.canadianmilitarypattern.com/1960%20235-261%20Engine%20Manual.htm

This is about as good as I have seen. I have never seen more than 3 ring grooves and 5 total pieces. I admire your persistence. Its a great way to learn if you have that sort of patience!

BTW, Pi is 3.14159. It really matters to get down to at least 4 decimal places.

Deve

1950 Chevy 3100 Deluxe Cab
1950 Chevy 3100 Standard Cab
In the Stovebolt Gallery
The Think Tank
More info and tips at Deve's Technet