Pan bolts are 8mm x 1.25
Shift linkage lever & Converter to flywheel are 10mm x 1.5
Valve body, TV cable & speedo are 6mm x 1.0
Trans mount & tail housing holes are 10mm x 1.5
American (US) threads are "not close" like some people think. Use the correct nuts & bolts! When you buy a tranz from a rebuilder or wrecking yard ask for all the needed bolts.
Notice the casting line that is shaped like a "rainbow". It flows through the upper cooling line fitting. This is a good indication that you have a 700/4L60 trans that is new enough to have the good parts in it.
There are more numbers and letters stamped into this area after the first number that I will not explain here since it is not necessary to find the year of the trans.
If the 700 you are looking at has a pad area that has been ground smooth, it may be from the unit being a factory rebuilt unit at one time. A tag is usually attatched to the trans case by the authorized rebuilder. This tag may or may not contain correct year info. Sometimes I have seen a year of rebuild ( ie:1989) but the case is an earlier year. This is something you find out when the pan is removed!
About 2 inches behind the ROUND 2 - 4 servo is the connector for the