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I understand there was a GM strike in Oct. 1964 affecting production of 1965 model Corvettes. My 1965 Convt was assembled in Nov. 1964.I read that GM stockpiled engines in anticipation of the work stoppage then used them when production began again. My question is in light of the stockpiling of motors what would be acceptable casting dates for a Nov. car? Second question...when you have no info on the original power of your car..how, other than the tach can you tell for certain how it was powered? Phil
That strike was so short, I dont think that it would affect casting numbers much. There were some odd ball blocks cast in Tonawanda and assembled at Flint that were installed in 65s. These are well documented in the NCRS data. NCRS accepts 6 months before the assembly date. There are some legitimate examples that fall outside that, but they are rare.
I think you mean casting dates, not numbers. That's why NCRS allows full judging credit for casting dates up to six months prior to the car's final assembly date, vs. the "typical" 2-6 weeks.
This particular national strike only lasted two weeks, but local issues at St. Louis extended it there by another month; no engine "stockpiling" was necessary - the normal inventory "float" just sat there until St. Louis production resumed.