08B was skipped!! Johnz and Kurt and a few others on the site informed me of this. You can find out aprox what day of the month your car was built by taking the last six numbers of the vin and place them in the slot. In Jerry's book he has a break down of what number cars were built in each month and I think the list is on this site as well. They built a certain number of cars each 24 hour shift so you can break the numbers down ti find out what day your car was built.
Also in August is when they had to last minute extend the 1969 production due to the cancel of the new 1970 Camaro so check your car to see if some parts have older dates then the norm. My motor is a May 30th build with may 26th castings date on the block putting a 2 month span where the norm is 1 to 4 weeks. My heads are casting date May 27th. let me know what you find I did a tom of research and recently found my pastial vin stampings by the oil filter and posted the pics my last six are 672077
Thanks, sorry to dig this back but I just stumbled back on to the thread.
My 08C Z/28 is just 219 units before yours and also has a wide spread on the block. It was assembled on June 4th and has V0604DZ on the pad. It also has the partial vin by the oil filter that matches the car. the casting date is E16 9, as were the heads if I remember right.