non adjustable valves on a 65 273?

65Val said
...or someone's put later 318 heads on your 273 block.

'68/'69 273's had juice lifters...same as LA 318 of those years.

Get us the block AND head casting numbers and block date, and we'll figure it out for you.

Where would I find the head casting numbers? The block casting numbers/date would be on the passenger or drive side of the block? Or is it the string of numbers on the front?