Water pump #s

[69YENKO162]

I have a GM water pump #376444 does any one know what year and motor this would go on, I know its for a BB http://www.yenko.net/ubbthreads/images/graemlins/dunno.gif

[Mr. T]

77-79 - 305,350 Nova
77-80 - 400, Truck
77-81 - 305,350 Blazer
77-81 - 305,350 Chevelle, Malibu
77-81 - 305,350 Camaro
77-88 - 305,350 Passenger car
77-91 - 350 Truck

What's the casting date on the water pump?

[69YENKO162]

One is 57 and I have one with a 60 on it.

[Mr. T]

Casting date should look something like this....for example: C217, March 21st of 67, or it could be 77. Is there a letter visible?

[69YENKO162]

The only letter is a D on the front right.