I was reading about a car problem where the distributor gear kept getting stripped in a souped-up Ford small block vintage 1970, apparently due to some kind of incompatibility w/a special high volume oil pump previously installed. I got to wondering – in general – what’s the purpose of combining both distributor and oil pump functions like that? Is it an engine-saving feature so that if the oil pump fails, so will the distributor, then the car won’t run? And how exactly does it all work? Does the cam drive the oil pump which then drives the distributor? Or does the cam drive the distributor, which then drives the oil pump? Or neither?
One more related question. The article seemed to imply the fuel pump cam (eccentric) wasn’t machined into the camshaft (after-market) , but instead a replaceable bolted on part. Are oem camshafts on engines w/mechanic fuel pumps usually configured like that too?