[salid]

Anyone here an expert of Motorcraft distributors, mid to late 60s vintage? Is there a place that describes the internal components? I’ve been looking at the 75 MPC and it left me with some questions. For example, is a 243 advance spring heavier or lighter than a 233 spring? Are advance springs color coded? What makes one spring the primary spring and the other the secondary? Which advance cams have the 10L slot option and which have the 12L slot? Is there such a thing as an 11L slot?

Somewhere there must be a document that gives all the details. Anyone know what that document is?