Direct Connection Big Block Valve Covers (Rare)?

Uncle Bob said

I'm skeptical on how long it's going to take to pour a quart of oil through that tiny slot.

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You remove it to pour the oil in. Only takes a gentle squeeze and a little wiggle to remove from the cover. Not yanked. You’ll see when you get to installing them. Hit the hole with some sand paper so there’s no sharp edges (if needed)