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10. Brent drills a 0.050-inch hole in each of the front lifter galley plugs. “For some reason, I have a lot of trouble when priming BBC oil pumps and often fight to get oil to the top of the heads. You can often hear air ‘burping’ when you do it, and I feel that this not only helps to purge air out of the lifter passages, but it ensures a nice little trickle of oil on the timing set and wear plate,” according to Brent. The wear plate is from Comp Cams and it will protect the block and cam gear.