Transmission case
 

I have a 3925660 case vin number 19K33646?might be 8 3 date P9R23A what would this come out of. Its the same date exactly of my late 69 Z

Believe that would be from a Chevelle, K was the Kansas City, Missouri assembly plant and VIN sequence numbers for '69 Chevelles began at 300001 for all assembly plants.

But the date on the case i think would be 70

Except that transmissions were stamped with MODEL year, not calendar year, so an M20 stamped October 23, 1968 destined for a 69 model year car, would be stamped P9R23A.

My 11A of 69 has the same date so that could. Be either one

Has to be a Sept of 1968 Muncie transmission with a '69 model year partial VIN, otherwise it would have been stamped with a '70 partial VIN - only the Camaro extended '69 production past the usual retooling and start of new model release.

Corvette extended 69 production into December, well until PAST the end of 69 Camaro production.

Ok thanks for clarification on that point James. Why was the '70 MY Corvette introduction delayed?

There was a strike and the vette was not produced in May and had low production in April... however I am not sure the reasoning. Could have been Power teams, Vette was scheduled to get quite a few additional power teams but was cut at the last minute.