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GM LS1 LS2 LS6 OEM upgrade rocker arms 1.7 ratio

● Upgrade OEM style design.
● 4340 chromemoly steel rocker bodies
● Needle bearing with trunnion
● Packed in blister and carton
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●Y&J upgraded LS series rocker arm is machined from 4340 chrome-moly steel casting with improved valve train durability. 
●Snap rings are used to secure the trunnions.
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