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Author Topic: cadillac parts reference/comparison pictures - oil pans, pickup tubes....  (Read 22825 times)
Stiney
C3
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Posts: 114



« on: April 09, 2008, 07:27:15 AM »

Oil pan comparison picture - left to right, modified eldo, stock '74 eldo, RWD '78 425, RWD '74 500, and a '63 SBC.



Oil pickup tubes.  From top to bottom - '74 RWD, '78 RWD 425, '74 eldorado.



Note the hole for the oil to enter on the actual pickup, eldo's were substantially larger in area.



Eldorado exhaust manifolds as compared to RWD exhaust manifolds.  The Eldo ones are the Top and 3rd down, see how they kick out to the sides as they dump.  Hard to find without cracks



Pickup tube disassembled for cleaning and modifying.  Only way to get all the trash out, clean and shake all you want, but when you take it apart, you'll still be amazed at how much is still in there.



The dime goes over the hole in the screen, soldered in place, forcing all oil to go thru the screen.  Bottom plate will get 3 holes added to match the one it came with.



I cheaped out and used a penny instead.



the finished modifications to the RWD oil pickup.  Compared to the Eldo's, I just had to add some more area to it.  Perhaps the Eldo's needed more flow to combat the heat of having the transmission so close and also under the hood with the engine?  I figure the Cadillac engineers used the intake size to determine flow capacity of the system, since all the pumps will flow the same at equal rpms.



All back together - that last little section I got with needle nose pliers after I snapped the picture.










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mario
C3
***
Posts: 115



« Reply #1 on: April 09, 2008, 01:47:38 PM »

hey stiney:
the penny was not an attempt to "cheap out," it was an attempt to put some "ZINC" in your oil...... Grin Grin Grin
at least that should be your story so stick to it.

ciao,
mario
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"Democracy is two wolves and a lamb voting on what to have for lunch. Liberty is a well-armed lamb contesting the vote." --Ben Franklin
Dale
C1
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Posts: 12


« Reply #2 on: April 09, 2008, 02:44:33 PM »

So....... It is true?  These things will nickel/dime and apparantly "penny" you to death.   Wink
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Stiney
C3
***
Posts: 114



« Reply #3 on: April 10, 2008, 07:49:36 AM »

460 van headers on 500 w/eldo pan for reference.







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Stiney
C3
***
Posts: 114



« Reply #4 on: April 10, 2008, 07:54:08 AM »

From my observations, the 425 seems to be the only member of the family that had a single dipstick tube hole, as compared to the 472/500 which had two, for front or rear sump.  Makes sense, the 425 only came with a mid sump?





From inside the pan....





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~JM~
Shop Keeper
C5
*****
Posts: 1853


« Reply #5 on: April 10, 2008, 10:42:41 AM »

From my observations, the 425 seems to be the only member of the family that had a single dipstick tube hole, as compared to the 472/500 which had two, for front or rear sump.  Makes sense, the 425 only came with a mid sump?

Now that's an interesting piece of info I hadn't heard before.

That would definitely help someone avoid buying a 425 by mistake.

Good stuff. Thanks.
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PS. You don't have enough cam. Grin

...Summit has a kit for $99.... Shocked
CadCo
Moderator
C1
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Posts: 19



WWW
« Reply #6 on: April 10, 2008, 01:56:30 PM »

Compared to the Eldo's, I just had to add some more area to it.  Perhaps the Eldo's needed more flow to combat the heat of having the transmission so close and also under the hood with the engine?  I figure the Cadillac engineers used the intake size to determine flow capacity of the system, since all the pumps will flow the same at equal rpms.


The non-Eldo pickup hole is more cross-sectional area than the tube. Being a hole in sheet metal, it will flow right about the same amount as the tube. However, as the pickup screen gets crudded-up over time, it could become a restriction as the screen should get crudded up right behind the hole first, just like a stock Chevy air cleaner (no diffuser plate at the snorkel entrance like a Caddy). I don't know why they did that. But what really confuses me is that the place that made our new tubes copied that difference - they actually made tooling for both screen covers so they could put the little hole on the front sump tubes and the big open one on the rear sump tube. They said they figured it may have been a turbulence issue due to the different tube shape, and since the little hole will keep up with what the tube can flow, they figured they would just do it like the original to avoid a potential problem.

And for those who don't have the time and inclination to rebuild the old tube, you can always just buy a new one  Grin



They don't have the hole in the screen, and they are hand brazed instead of furnace brazed, but they are otherwise a direct replacement.
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The very best in Cadillac engines, parts, and tech support. www.cad500parts.com
ST Dog
C4
****
Posts: 499



« Reply #7 on: April 10, 2008, 09:03:31 PM »

And for those who don't have the time and inclination to rebuild the old tube, you can always just buy a new one  Grin

http://www.cad500parts.com/parts_pics/FSandRSPickup.jpg

They don't have the hole in the screen, and they are hand brazed instead of furnace brazed, but they are otherwise a direct replacement.

Those look really nice  Cool
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Stiney
C3
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Posts: 114



« Reply #8 on: April 30, 2008, 11:59:58 AM »



.
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~JM~
Shop Keeper
C5
*****
Posts: 1853


« Reply #9 on: August 03, 2013, 06:11:20 AM »

Here are a few pics of a 368 Eldorado Oil Pan.


* 1A.JPG (116.63 KB, 700x525 - viewed 422 times.)

* 2A.JPG (113.62 KB, 700x525 - viewed 369 times.)

* 3A.JPG (111.88 KB, 700x933 - viewed 340 times.)

* 4A.JPG (85.11 KB, 700x525 - viewed 335 times.)
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PS. You don't have enough cam. Grin

...Summit has a kit for $99.... Shocked
~JM~
Shop Keeper
C5
*****
Posts: 1853


« Reply #10 on: August 03, 2013, 06:13:26 AM »

As you can see... It makes an interesting alternative to the 500 Eldorado Oil Pan.

Here are a few measurements.


* 1A.JPG (123.17 KB, 800x600 - viewed 347 times.)

* 2A.JPG (118.53 KB, 800x1066 - viewed 382 times.)

* 3A.JPG (116.74 KB, 800x600 - viewed 340 times.)
Logged

PS. You don't have enough cam. Grin

...Summit has a kit for $99.... Shocked
~JM~
Shop Keeper
C5
*****
Posts: 1853


« Reply #11 on: August 03, 2013, 06:16:55 AM »

Aside from the nice compact shape that would be helpful in certain swaps, they are also a lot less expensive than the 500 Eldo Pan.



* 4A.JPG (123.94 KB, 800x600 - viewed 341 times.)

* 5A.JPG (117.07 KB, 800x600 - viewed 333 times.)

* 6A.JPG (109.13 KB, 800x600 - viewed 333 times.)
Logged

PS. You don't have enough cam. Grin

...Summit has a kit for $99.... Shocked
Monzallac425
C4
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Posts: 491


Salinas, Puerto Rico


« Reply #12 on: August 03, 2013, 01:11:15 PM »

Thats the pan I used on the 425-HBody swap.

Easy to find on www.car-part.com ( I got mine from Oklahoma)

Make sure you get the pickup tube also.

Doug in P.R. Cool
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Monzallac 425 ....now on its 4th owner....Its still alive.............Somewhere.........?
~JM~
Shop Keeper
C5
*****
Posts: 1853


« Reply #13 on: August 04, 2013, 08:43:44 AM »

Doug,

Did the Pick-Up Tube need any modifications or was it bolt on?

I have never had the opportunity to mock one up. I also don't know if the 368 Eldo pan would need any clearancing with the increased stroke of the 500 crankshaft.

Thanks
~JM~
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PS. You don't have enough cam. Grin

...Summit has a kit for $99.... Shocked
Monzallac425
C4
****
Posts: 491


Salinas, Puerto Rico


« Reply #14 on: August 04, 2013, 05:32:29 PM »

No, just had to move the holdown main cap bolt/stud to another spot that is all.


Not sure if it will fit a 500 or not.

Doug in P.R. Cool
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Monzallac 425 ....now on its 4th owner....Its still alive.............Somewhere.........?
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