My take on the oiling system crossover tube for the small block

prochargedmopar said

The one guy in the other thread said the cam bearing clearance basically closes the oil feed holes up to the galley which effectively restricts them.
My biggest concern now is the pickup/flow to the pump.

60psi of pressure I would think covers a multitude of sin.
Kinda like 30psi of boost.

If I get the pipe taps and do the crossover once, then these mods will become commonplace in all my builds.

Free Insurance.

Click to expand...

The guy who said that never explained nor have I ever heard of anyone adjusting cam bearing clearance to restrict flow. A cam bearing works the same way as a rod or main bearing. If it has some clearance, it leaks. The amount of volume flowing to a cam bearing is excessive in relation to the load and rpm(half the crank) that the cam sees. That excessive oil is better restricted and sent to the crank.
I have never heard that there are .001 under or over size cam bearings to adjust clearance in a cam bearing, and because of the way cam bearings are installed, you would ruin a set just establishing what is needed. I say bs on that type of restriction imho.
Cam bearings leak huge, that's why people restrict them.
If I am wrong the guy who posted that should explain how it is done.
Not just make a blanket statement and disappear imho.