Topic: When was change L8 C5OE cast iron water pump phased out to the C6OE version?

[Berns]

Hi,

Is this reasoning correct?
The block cast date is end of September
The car manufacturing date is beginning of October
Thus, the timeframe between engine and car meeting eachother is limited to a few weeks around end of September, beginning of October.
So engine assembly most probably is in that short timeframe.

If this reasoning is correct, can we determine what water pump should be used?

The assumption herei s that the water pump was fitted to the engine, before the engine was fitted to the car

Maybe I'm getting this all wrong. I'm eager to learn.

[Bob Gaines]

I guess you didn't find the block assembly date (short block heads etc.)since you only talk about the block casting date.You want the C6OE version based on the time frame you laid out and conformation from the Bob Mannel.

[Berns]

Hi All,

I managed to take a picture of the actual pump.
By the looks of things it's a C8AE-J.

Your thoughts on this discovery are welcome.

[Bob Gaines]

Hi All,

I managed to take a picture of the actual pump.
By the looks of things it's a C8AE-J.

Your thoughts on this discovery are welcome.

The C8AE-J was not used until 1968 production. With that said the most logical conclusion is that apparently your original 1966 waterpump gave out and was replaced sometime after 1968 when the C8 waterpump came into use. At least as it relates the the C8AE-J waterpump.