Obviously the Pontiac plant had to build engines in advance of anticipated sales. It is possible that sales of Ram Air varieties were not as high as the factory had anticipated. I remember back in the day Ram Air varieties were virtually unheard of until the Judge came out. Many dealers pushed daily drivers over performance.
It makes sense from a production standpoint to build similar engines in batches. Bread-and-butter engines like the 350/2bbl were probably a regular production item; build them and ship them. A batch of low-volume high-performance engines might take months to use up, hence long times between casting dates and EUNs. The factory HAD to have engines available or risk delaying orders.
|