Re: Oiling system history recap and update on the Oldsmobile oil pump conversion

Posted by Ross On 2024/4/23 6:22:17

Very interesting that the V8 gears were a mod of the earlier gears. I can surely understand that as they already had the tooling for forming the teeth and the earlier pumps were trouble free. Are the overall length of the gears the same? Also, very handy to have the specs for the shaft and housing bore. On the earlier pumps, the input shaft had a much longer bearing area. I'm pretty sure that an extra overhang loading from driving the vacuum pump was a chief factor in accelerated shaft wear. What I've never figured is how some cars escaped this til high mileage and some tanked at 20K.