I think the pinned shaft was to lessen dist. gear wear for shaft missalignment. I have always ran one even with a HV high pressure oil pump with no problems.
Harry
Interseting. Maybe that's why I always wore out my distributer gears w/the solid one piece shaft w/a high volume oil pump?
But,,,,, I also use a solid shaft one piece w/standard volume oil pump w/no wear problems. Same block, just changed pump & no problems.
