Who knows factory cylinder heads ?

I haven’t the slightest issue with the engine. No chatter and runs great. I just wanted to look at them. They are matching number 72/360 original heads.
I have no clue if it has sold or hydraulic lifters. But, I believe they are solid based on the rockers or rods won’t budge the smallest amount when pushing either downward, on all 8 I checked.
My understanding is my rockers are not adjustable as there is no adjusting nut on them. I have 3 out of 8 rods or rockers on the passenger side. That have the smallest amount of play and the rods spin very easily. One rod has a considerable amount of up and down play of those 3 that spin easily. Where the other 5 are tight as can be. If these are non adjustable why would this be the case ? And if I do infact have solid lifters can you add adjustable rockers to the stock arm to make them adjustable ?
I have a 72 - 360 that is fairly stock with exception of intake, carb and unknown bigger cam. Today, I checked to see if I have adjustable rockers. I also wanted to see how tight or loose my lift rods and rockers were. I haven’t the slightest issue with the engine. No chatter and runs great. I just wanted to look at them. They are matching number 72/360 original heads.
I have no clue if it has sold or hydraulic lifters. But, I believe they are solid based on the rockers or rods won’t budge the smallest amount when pushing either downward, on all 8 I checked.
My understanding is my rockers are not adjustable as there is no adjusting nut on them. I have 3 out of 8 rods or rockers on the passenger side. That have the smallest amount of play and the rods spin very easily. One rod has a considerable amount of up and down play of those 3 that spin easily. Where the other 5 are tight as can be. If these are non adjustable why would this be the case ? And if I do infact have solid lifters can you add adjustable rockers to the stock arm to make them adjustable ?
Yes you can add adjustable rockers to hydraulic lifters. You MUST have adjustable rockers for solid lifters. Are you sure you have "up and down" play. You do realize each pushrod has to be checked when the lifter is on the base of the cam well into the compression stroke. Lifters that are in the lift position will be tight as in "you can not spin the push rod" others on the compression stroke can be spun as they are on the compression stroke and the valves are closed. If the engine runs good and nothing is "clacking" dont sweat it.