Oldsmobile stock replacement oil pumps and drive shafts

[kustomkyle]

When rebuilding an Oldsmobile V8, is there a preferred oil pump brand? I have access to Mahle pump and pickup/screen, they are both made in the USA. Stock build/standard volume pump.

Also, are there any preferred oil pump driveshafts? I've read about other engines and how the shaft is an inherent weak point in the factory design. I have easier access to a Melling shaft as opposed to Mahle or Sealed Power. Was also looking at the Milodon shaft, but have concern with that not working in conjunction with stock parts.

 

[olds307 and 403]

Mahle oil pump? Didn't know they made one. Most use the Melling drive shaft, oil pump and pick up with a stock pan.

 

[fleming442]

Melling is fine; don't run a HV on a bronze distributor gear.
Oldsmobiles get a bad rap for oil pressure issues, but it has more to do with clearances than the pump.

 

[olds307 and 403]

I be darned they do have one. If it is made in the USA buy it. BTR uses the Melling driveshaft even in high horsepower builds.
https://www.google.com/url?sa=t&sou...FjAMegQIBRAB&usg=AOvVaw02eGX4oW-DxdryhJdRmZXI

 

[84 W40]

Melling with a bolt on pick up. If its not available a press on is fine but i would tack weld the pick to the body of the pump after its press in.

 

[kustomkyle]

Mahle oil pump? Didn't know they made one. Most use the Melling drive shaft, oil pump and pick up with a stock pan.

The Mahle I ended up getting appears to be a Melling, as it has "USA" and the Melling part# stamped into it. Not sure if it's a rebox or if all Mahle pumps are actually Melling.

That being the case, the Melling drive shaft is cheapest and easiest to get through Summit. It will just have to wait until a few other items are ordered (like the timing chain).

Melling with a bolt on pick up. If its not available a press on is fine but i would tack weld the pick to the body of the pump after its press in.

Steer my in the right direction with the bolt on Oldsmobile pickup/screen that isn't for a high volume pump/pan. Haven't seen one yet.

 

[84 W40]

Melling did make a stock pump with a bolt on pick up. Last one i seen was 30 years ago.

 

[TURNA]

I used a Melling in mine.

I also used the Melling shaft.

But the Olds shafts are not like Chevys they are just a hex shaped piece of steel.

Not much if anything can go wrong with them

 

[kustomkyle]

I used a Melling in mine.

I also used the Melling shaft.

But the Olds shafts are not like Chevys they are just a hex shaped piece of steel.

Not much if anything can go wrong with them

What I was thinking. Have heard people say how they had their pump pickup tube fall off.

 

[TURNA]

the tube tube yes not the driveshaft

Does it happen...🤔......I have heard it happening never seen it except in a 2010 impala.