[john in illinois]

The timing cover partial flow filter was originally designed for engines modified for pressure feed. It taps oil from the hole in the side of block. this is right out of the pump.

This is where it gets confusing. There is actually oil pressure from the pump up to the spinning distributor drive gear. This spinning gear throws oil on the valves and the it drains through the oil dams to front.Clear as mud eh.

The timing cover filter can starve the valve chamber of the oil from this gear if it does not have a restrictor in the line. I would not recommend this filter.

John