425 oiling

[canucklehead]

Greetings Olds Fans.I was told that I will need to upgrade the oiling system if I go high performance with my 425.What is needed?Do I need restrictors?
I am thinking 6 or 7 quart oil pan high flow pump and windage tray.Will this be enough?

[88 coupe]

Main bearing clearances = .003”

Rod journal clearance = .002”

Rod side clearances = .018”

Restrict the oil flow through the pushrods.

Drill a ⅛” hole in each cam bearing, 180° from the existing one, and install them upside down.

High volume pump.

7 or 8 quart pan with 5 or 6 quarts of 10w50, with a Fram HP2 filter.

Forget the windage tray.

Norm

[joe_padavano]

Originally Posted by 88 coupe

...Restrict the oil flow through the pushrods....

Norm,

Years ago I remember reading about a trick of stuffing a pipe cleaner in the pushrod to restrict oil flow. Any thoughts on methods you're familiar with?

[442Harv]

I would not put pipe cleaners in the push rods, just would not want to take a chance? Probably the worst the could happen would be a pluged up rocker arm? The one post about redrilling the cam bearings, makes sence. The machine shop I use also says, he has off set the oil hole on the cam bearings. I have the restricked push rods in my 70 W30.

[88 coupe]

Originally Posted by joe_padavano

........ Any thoughts on methods you're familiar with?

Yep. You might be remembering this thread.

From post #21.

Originally Posted by 88 coupe

........ Lifter bore restrictors have been used with solids for about as long. Pipe cleaners were commonly used to restrict pushrods until Mondello started selling his “store bought” versions.

For the $112 difference, I’ve always used the cheaper method and have had no problems .........

Originally Posted by 442Harv

I would not put pipe cleaners in the push rods ........

Your choice.

Originally Posted by 442Harv

........ the worst the could happen would be a plugged up rocker arm?

Not possible.

Norm