Modify a Magnum for LA rocker gear oiling ?
Have you experienced some that won't? Just curious for information sake.
Cley
I had to go back and look at the post to see what was said.
If you are using stud mounted rockers then pushrod length, valve stem height, lift and…**** I forget the last point but all those things with stud mounted rockers affect geometry.
Once everything else is set, like stem heights and such then pushrod length affects geometry.
If you have shaft mounted rockers that isn’t so.
Once you establish stem height and such, then you have to determine if the shafts are in the correct position. Mostly they aren’t.
So you have to move the shafts to correct geometry.
Once the shafts are where they go, then you measure for pushrod length according to where the rocker arm manufacturer tells you how much adjuster protrusion you have to have.
You can alter the geometry SLIGHTLY changing pushrod length with shaft mounted rockers but nothing of consequence.