Lifter Pushrod Guide Tray Set Compatible FOR - LS 4.8 5.7 6.0 6.2 With 7.400 Rods This assembly includes hydraulic roller lifters designed for LS series engine architecture.The set contains lifter guide trays and dimensionally standardized pushrods to meet specific valve train geometry requirements.Package Includes: Hydraulic Roller Lifters (quantity as specified), Lifter Guide Trays (quantity as specified), 7.400 inch Length Pushrods (quantity as specified).OEM Reference Numbers: Matches standard LS7 lifter assemblies and related components.Compatible with LS platform engines including 4.8L, 5.3L, 5.7L, 6.0L, and 6.2L configurations.Proper fitment should be verified based on specific engine build specifications and component tolerances.Installation requires following standard engine service procedures for valve train component replacement.cylinder head surfaces and lifter bores are clean and within dimensional specifications before installation.Install lifters into their corresponding bores, observing correct orientation if directional indexing applies.Position lifter guide trays to secure lifters in place within the engine valley.Attach guide trays to the block or deck using recommended torque values.Install the 7.400 inch pushrods according to the specified rocker arm and head/deck setup.Adjust valve lash or preload per the engine manufacturer's hydraulic lifter specifications, typically by rotating the engine to the firing stroke of each cylinder, setting zero lash, then applying the specified preload rotation.