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12 The cam works through a fresh set of OEM Mopar roller lifters, inserted into their bores in groups of four. These rather long lifters combined with the cam's high position in the block permit reasonably short pushrods--6.550 inches on the intake side and 7.800 on the exhaust. The pushrods are drilled with oil passages. This shot also shows the valve relief pockets in the pistons, and that the pistons at TDC are flush with the deck.