Product Description Specifications 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. Category: Engine Components>Rocker Arms Core: N LTL: N MPN: 1477-16 Proposition 65: Y Special Order: Y