Head casting numbers?

[Old Man]

I have a 69 with a 350 which is not original to the car. So far I know the block casting number 3932388 could have been in a late production 69 Camaro. The intake manifold is 346250 GM 4 which is for a 76-83 305/ 350 next is the heads, where do I find the head casting numbers, under the valve covers?

[1968RSZ28]

where do I find the head casting numbers, under the valve covers?

Correct.  The cylinder head casting date is located there too.

Paul

[JohnZ]

It'll look like this.

[Jonesy]

The 388 block is more of a mid year than late year block.

[Old Man]

The 388 block is more of a mid year than late year block.

The car is a late production car by the numbers and I know by the vin, cowl tag info and the POP which I was lucky enough to get was built with a 307, PG, non posi 10 bolt. I'm just trying to figure out what the 350 engine that is in it now was built with.

Thanks for the pic John.

[9T4Z]

The 388 block is more of a mid year than late year block.

Makes sense... my 388 block is in my 05A built car..

[Old Man]

The casting numbers are 3973370, small valve replacement heads.