Casting number location?

[Patch]

Okay......I feel dumb. I cannot find the casting numbers on my new motors' heads. It's a 1990 LA 360 with a factory roller cam (Right before the Magnum) The only numbers I can find on the heads are 285 on the left bank and 173 on the right....Am I missing something? I am assuming the heads are the better swirl port....errr....whatever...lol...Thanks for the help in advance.....Pat

 

['64 Cuda]

Did you pull the valve covers?

 

[Patch]

lol....yes. There is no numbers cast in like in the earlier heads. The only cast numbers are the 285 and the 173. And the clock symbol of course.

 

[Patch]

Found em'.......there under the intake port pad......4448308's!!!! Yeah!!!!