Oil drainback....Do all Mopar V8s drain oil back through the lifter valley or are the holes in the block?

[Kern Dog]

This is a topic that I never thought of. Oil drainback. Look at the picture of the deck of an LA series:

Here is a 440 block.

All I can see in both blocks are coolant holes and head bolt holes. Does all the oil that makes it to the rocker gear drain back through the lifter valley?
I see nothing that looks like an oil drain in the decks.

 

[ckessel]

Back and front of the block. Some drops through the valley's too.

 

[Jeff Peterson]

Hemi’s have drain back holes in the deck.

 

[DeltaV]

340 drainback holes circled in yellow.

 

[rickseeman]

In the lower left and lower right corner of the deck of a Hemi.

 

[Hemirunner]

This is a topic that I never thought of. Oil drainback. Look at the picture of the deck of an LA series:


View attachment 1849716

Here is a 440 block.

View attachment 1849717

All I can see in both blocks are coolant holes and head bolt holes. Does all the oil that makes it to the rocker gear drain back through the lifter valley?
I see nothing that looks like an oil drain in the decks.

It all comes through the lifter valley on both of those blocks

 

[Kern Dog]

It is interesting that the Hemi does have drain holes in the block. Thanks to the one that posted that info.

 

[RemCharger]

Oil has to go somewhere. Take a look at what you're looking at.

 

[Hemirunner]

It is interesting that the Hemi does have drain holes in the block. Thanks to the one that posted that info.

The lifter valley side of the hemi head is still open and oil from that side goes down the lifter valley. The head is so wide it needs the outer drain backs on the exhaust side or all of the oil in the engine would accumulate in the heads.

 

[padam]

I was wondering about this myself.
It looks like it all has to run down over the cam.

 

[Kern Dog]

Take a look at what you're looking at.

Uhhhh.....

Not exactly Shakespeare level of poetry here....

 

[DeltaV]

‘There is a tide in the affairs of men, Which taken at the flood, leads on to fortune. Omitted, all the voyage of their life is bound in shallows and in miseries. On such a full sea are we now afloat. And we must take the current when it serves, or lose our ventures.’ – William Shakespeare

 

[RemCharger]

Uhhhh.....

View attachment 1850085

Not exactly Shakespeare level of poetry here....

View attachment 1850086

Orrrr.... don't!