My 422 smallblock build

SSG_Karg said
In the mean time, I test fit the oil pump and pickup and measured clearance from the pickup to the bottom of the pan. Looks like 1/4” without oil pan gasket, so probably like 3/8” with gasket. I’m happy with that. I’m using a Melling M-72HV oil pump that I massaged and smoothed the passages on. The pan and pickup are from Moroso. PN 20710.
Had to use a factory main cap bolt under the pump body.

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Take a ball of aluminum foil and tape it to the bottom side of your oil pickup then put the pan on with the gasket. The inside of the pan will flatten the foil ball and you will know what the gap is from the bottom of the pickup to inside surface of the pan. Or can use modeling clay.