The engine is a 5.9 Magnum.
In another thread a member suggested:
"I would also add , 1/8" drill between the lifter pedestals to aid oil return, 3/16"long drill from main bearing journal to lifter galley for more oil volume to the mains (it is step drilled from factory) and debur the casting flash."
I am wondering if any of you have done this. If so, do you think it is worthwhile?
Also, if I open the stepped hole from the main bearing saddle to the cam bearing bores up to 3/16, will I...
Drilling oil galleries and oil return holes?
