360 heads

[Ken Blackman]

Can anyone tell me what these heads are off of or who manufactured then?
360L
3769974
15440
Not sure if the 0 in the last number is correct.

Thanks
Ken Blackman

 

[Bad Sport]

LA 360 heads 1975-76 1.88 intake/1.60 exhaust

 

[brian6pac]

1544 would be the date code, 154th day of 1974. That would make them for a 1975 engine