How do you know this? I believe the engine is indeed correct and the last of the 289 with markings for a 302. Block poured and molded on 3-8-68 and stamped in 5-8-68 and placed in car on 5-24-68. My research shows the Windsor plant was known for not stamping VIN's on blocks.
Sorry for the my confusion. Mind was set on 65-66 cars obviously since I moved it to the 65-66 section. Just finished responding to four questions from that period and it didn't click over to 68 when I read your first post for the very first time.
So start over again on my part
I don't have Vin stamp in the normal location for my Metchen block but I do have an outline number 2. Does anyone else have this and what could it mean if anything?
First engine plants didn't stamp the engines, cars or transmissions. All of that was done at the car plants since the engine plant a month or more before hand would never have had an idea of what car the engine was planned for. It was just another C code automatic engine to them.
Where have you looked for the VIN? On the pad behind the intake manifold on the block?
Did you check the back side of the heads? They may have been removed and reversed if the engine has even been rebuilt. NJ is well know for stamping VIN's in a number of different locations on big blocks and its possible that one of those same workers got lazy and stamped a small block in similar fashion though you would have thought by as late as your car is, they would have all been on the same page that late in the year. Here is an example of what Ford wanted and did get done on other 68 NJ small blocks. This being a March 68 example
Given the new federal regulation the inspectors were likely looking to confirm that the stamping did take place at least some place and likely reminding workers that adjustments (if needed) needed to be made. According to Ford there was an inspector for every 9 or 10 workers so its not like they didn't have enough assigned to every group of stations or processes.
Again my apologies