With upgraded trunnions that are secured by snap rings along with a black oxide finish, our upgraded OE LS rockers offer higher lift capacity than stock. Featuring a 1.7 ratio, these 1477 rockers fit LS1, LS2 and LS6 engines. PartNumber : cca1477-16 Description : COMP Cams GM LS1 Upgraded OEM Rocker Arms - Set of 16 California Proposition 65 : WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov Title : Trunnion-Upgraded 1.7 Ratio Rocker Arm Set for GM LS1 Engine Components::Rocker Arms