Re: Olds Oil Pump (again)

Posted by Eric Boyle On 2007/7/26 13:28:56

From what I could tell when I was doing my investigation into the V8 oiling problem, the "OEM", or stock pump, is the same as the high volume pump externally. How it bolts on, where the pickup is, casting thickness, etc, are the same. The only external difference I noticed is the diameter of the pickup tube, and the fact that you can bolt one on instead of pressing it in. (you can do both, actually. The bolt on tube is the high volume one)


I tried several different oil pumps including 302 Ford, 390 Ford, 460 Ford, 455 Pontiac, and finally the 455 Oldsmobile. None of them worked as well as the Olds, but I imagine someone could make their own adapter for any of these if they really wanted to. I chose the Oldsmobile for ease of adaptation, and it's relatively cheap, even in the high volume version.

I got this idea one night while browsing Craig's Panther site, and looking at his oil pump modifications, which basically he lowered the oil pump a couple of inches deeper into the pan to keep the pump submerged in oil more. I thought to myself, "if he can do that, why didn't he just adapt a different pump to the thing and be done with it totally?".

To make a looonnnggg story short, I went through and found every engine that has a CCW rotation like the Packard, and started looking at their pumps. Low and behold, I found the Oldsmobile. So, it was quickly put to use by Keith and Craig, and now you have the "Olds Oil Pump Conversion Kit".

Keith- Nice pan, but I don't ever plan on dropping mine that much to require a sectioned oil pan!