Re: One oil pump modification now on file

Posted by John Payne On 2012/10/24 4:45:29

I thought I might mention the modified Packard oil pump in my '56 Pat. I can't remember the full details but it involves replacing the Packard main shaft with a longer 1/2" shaft, which I was told is marginally thicker than than the original. The pump body is reamed to accommodate the larger sized shaft and this also has the advantage of removing any previous wear. Cadillac gears replace the originals as they have a 1/2" bore to suit the shaft, and all this is supported by a 1/2" base plate, although I'm now not sure how the shaft is seated. This pump and others were modified by a gentleman in LA, the same one who had designed a modified bell housing to take a Turbo 700R4. As part of the project to fit this pump to my car, a '50's Chev electric wiper motor was fitted which works pretty well. Whether the oil pump or bell housing modification are still available I don't know, but I do know that both projects were put on hold some time ago due to the passing of the engineer who did the machining. I recall mentioning this in another post a fair while ago.

The reason I mention it again is that the pic's shown by Jack look quite similar to what I recall a pump like mine looks like. If it has a 1/2" shaft it just might be from the same source. Regards, John