[RA1John]

Since we know that RAII engine blocks and cylinder heads were cast in limited batches during the '68 model year, does it make sense that the intake manifold may have a cast date as far out as a month or more?

I spoke with a friend who worked at the PMD engine plant back in the 60s and he stated that all engines were built according to vehicle build orders. Engines weren't built up ahead of time and set aside until they were ordered (other than for replacement).

He did say that the SD engines were routed to a separate line for final assembly (usually a weekend OT opportunity for some).

Is it possible that a "D" cast engine would have an intake manifold cast in May or June according to vehicle build order?

Also, during production, if there was an engine problem at the vehicle plant, is it logical to assume that PMD engine would provide the vehicle plant with another broadcast code correct engine according to that specific application? Not like the assembly plant installed "SR" engines. Likewise, would it have been possible during the '68 MY that a customer could order an engine with a broadcast code and not get an "SR" engine?

Thoughts?