next I made a aluminum block spacer get the correct height for the push rods/rockers and all.
this piece of aluminum started out as a larger piece and machine down to correct height.
with the extended height I was dealing with I had to change the rocker arm studs.
the original style had the allen head built into the ball cup and threads for adjusting the valves.
new style would be a longer allen bolt and the threads would be tap farther in to the head. I also would take the old stud and cut the ball cup off and drill though it and now become just a half ball cup that I could slip over the stud and use a jam nut below the rocker to hold the assy together.
final valve train setup end up working very good. also you can see how much lower the ovrm head is over the ohh head.
I would have to make a new valve cover by using the original bottom part only from the ovrm and the top from the ohh. reason why ,one the ovrm fit good on to the head and for some reason the ohh doesn't and I had to make it just little extra Tall to insure everything would fit correct under the cover.
this was the easy part. the next part of the build is where it becomes really fun and doing things to a Tecumseh motor that has never been done.