Hydraulic roller lifters to solid flat tappets?

[Jerry Clayton]

You might want to consider opening up the side clearance on the connecting rods to allow more oil to sling up on the cam/lifters----and or, use rods /bearings with a squirt hole.

Restricting the oil flow to the tappet gallies isn't done because the rollers need less oil--its done usually because the engine has a fully rollerized upper end and doesn't need so much oil flow so it can be directed the excess to the lower end of the engine-------