OEM Oil Pan for 351W

[ralt962 11]

I'm trying to determine if the oil pan that came with my engine was OEM.  I bought an aftermarket but the stamping area around the bearing has some suspect area.  

The original pan does have the drain plug threads (a thick metal piece spot welded into the pan on the inside.  I would guess not many after market pans would have this feature.

Have not found a part number on it.  Originally painted orange.   

[RPM 1,190]

I'll check mine tomorrow ralt.

[1969_Mach1 333]

If it's a small block oil pan compare the width of the flange that goes around the rear main bearing.  In my experience, the OEM oil pan was more narrow in the flange area than aftermarket oil pans.

[RPM 1,190]

This is the pan I removed from the 351w circa 1995. The raised rib at the mains looks to me to be shorter than the Milodon I reinstalled today. I didn't take pics or measure the Milodon, but I'll be removing it tomorrow as it leaks at the rear. 

Spot welded filler bolt:

Front of pan below:

Rear of pan:

Rib height:

[ralt962 11]

Thanks those are great pictures.  I'll compare to my original.  No idea if its original or not.  Came with the engine.  

The one I purchased is lighter gage than the original and does have the spot welded drain plug.  I'll check mine to your dimensions.

[ralt962 11]

I measured my original and its the same as you show here.  I think I'll install that one and see if I can finally fix my leak.  One issue I have is the rear main seal.  Replaced it twice.  Had it sealed when I built the engine on a stand.  But now I have the linkage removed and the cross member so I can install the pan straight up and not slide it in over the linkage.  Hopefully this will do the trick.

thanks for the help