Chevy 235 oil on the top end??

Question. Did the 216's oil the top the same way, through one of the head bolts?

 

The "special" drilled head bolt was recomended by Chevy when installing a 55-58 head on a 59 and later block.it actually meters the oil flow down from full pressure.Using a regular bolt bolt in this case increases oil flow.The oil flow comes out a drilled p***age in the block deck,flows to the head bolt,there's a triangular cut out in the head gasket to allow this.It does not p*** by the head bolt thrads.The oil p***es by the reduced shank of the head bolt,makes a right angle turn through another p***age up through the head and to the rocker shaft.There is on some heads,a 1/8 inch pipe plug on the right middle side of the head.removing this plug,you may see a drilled orfice,about .062 inch,that restricts oil to the rockers.
It's a mix and match game with these old Chevy 6's.But I never seen one that wouldn't get oil up the rockers unless there is a blockage somewhere in the rocker oil p***ages.
I suggest to find the blockage and fix the problem at the source.

 

A friend installed 235 Chev after a high dollar rebuild at local machine shop. Hyd lifters would not pump up, rocker ***y was getting oil ok. This engine was out of a manual trans car. Friend says he diagnosed the problem. ( we all know 3spds had solid lifters& powerglides had hydraulic lifters.) He says the solid lifter block has no oil p***age to feed oil into the side of the hyd lifters. The machine shop converted the engine to hyd lifters & cam without the owners approval. Woops!

 

I had to grind a slot to the threads on my 235 to get oil to the top,one of these days I will pull the head to see what I did wrong when I put the motor togather. Its all 57 according to the date codes so no miss match of parts but I did something wrong.