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GM VALVE LIFTERS & COMPONENTS

12371044
Hydraulic Lifter Kit (Set of 16) (not shown)
• For use on all 396, 427, 454, and 502 engines that use hydraulic flat tappet lifters
• For single service replacement use P/N 5232720

17102353
Lifter Assembly (Single Piece) (not shown)
• Designed for use with the Gen V 454 and 502 engines
• Used when no adjustable rocker arms are required
• Package contains one lifter assembly

D. 17120060
Hydraulic Roller Lifter, ZZ572/620
• Roller valve lifters used on the ZZ572/620 engines
• Use with camshaft P/N 88961557, intake pushrod
P/N 88961559, exhaust pushrod P/N 88961558, rocker
arm P/N 12361323

E. 12371056
Hydraulic Roller Lifter Kit
• Hydraulic roller lifter retainer kit can be used on all Gen VI 454 and 502 engines that are machined for hydraulic roller lifters
• Includes 16 of roller lifter P/N 17120061, eight lifter guides, one lifter guide retainer and four retainer bolts
• For single service replacement lifter, use P/N 17120061 These lifters allow more oil to the rocker arms than the late-model truck roller lifters.

F. 88962920
Mechanical Roller Lifter, ZZ572/720
• Mechanical roller valve lifters used on the ZZ572/720 horsepower engines
• Use with camshaft P/N 88962216, intake pushrod
P/N 88962284, exhaust pushrod P/N 88962283, rocker
arm P/N 12361323

12551397
Roller Tappet Guides (not shown)
• Roller tappet guides used with all 502 engines and 454 HO engines
• Used with roller camshaft engines
• Sold individually; order eight per engine.

12551399
Roller Tappet Guide Retainer (not shown)
• Roller tappet guide retainer used with all 502 engines and 454 HO engines
• Used with roller camshaft engines
• Order only one per engine

G. 14044875
Lifter Bore Repair Kit
• Scored or leaky lifter bores can be repaired with GMPP’s sleeve kit
• Recommended for competition engine builders who
“blueprint” the lifter bores

Drill the defective lifter bore to 1.044". Shrink the sleeve by cooling it to -40F and insert it in the lifter bore, making sure that the bottom of the sleeve is flush with the camshaft cavity. Drill a 7/16" hole through the oil gallery and finish the sleeve ID to 0.8432"/0.8442". The sleeve can also be predrilled with a 1/2" oil hole before installing it in the block.