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The Trick Flow aluminum roller rockers are designed for use on 429/460 big-blocks, but they are interchangeable with the 351 Cleveland-even the 1.73 ratio is factory for both engines. The rockers feature CNC-machined bodies, needle bearing fulcrums and roller tips to reduce friction, and a machined relief on the underside of the body for added valvespring clearance. The 8-inch-long pushrods are also Trick Flow items. The one-piece pushrods are cold-formed from 0.080-inch wall 4130 chrome-moly, and are heat treated for use with guideplates.