maXpeedingrods Hydraulic Roller Lifters for Chevy Chevrolet SBC V8 350 283 327 302 307 265 400 Fit for Chevrolet small block 265 1955-1957 4.3L, for Chevrolet small block 283 1957-1967 4.6L, for Chevrolet small block 327 1962-1969 5.4L Fit for Chevrolet small block 350 1967-2003 5.7L, for Chevrolet small block 302 1967-1969 4.9L, for Chevrolet small block 307 1968-1973 5.0L, for Chevrolet small block 400 1970-1981 6.6L Lifter Outside Diameter: 0.8425 Retro-fit for non-roller blocks Package Contents: 8 Pairs of Hydraulic Roller Lifters with Lifter Link Bars for Chevrolet small block 265 1955-1957 4.3L for Chevrolet small block 283 1957-1967 4.6L for Chevrolet small block 327 1962-1969 5.4L for Chevrolet small block 350 1967-2003 5.7L for Chevrolet small block 302 1967-1969 4.9L for Chevrolet small block 307 1968-1973 5.0L for Chevrolet small block 400 1970-1981 6.6L Lifter Link Bars Included:YES Lifter Outside Diameter (in):0.8425 in. Lifter Style:Hydraulic roller Link Bar:Vertical