Ford 351C/M-400 1970-1983 Adv. Duration:280/288 Duration @ .050":227/235 Lift:.565/.565 Lobe Separation:109 LC Includes Lifters:No 1800-5600. Rattler, Choppy idle. High performance street, stock converter ok, best with 1800+ and gears.
Ford 351C/M-400 1970-1983 Adv. Duration:288/296 Duration @ .050":235/243 Lift:.611/.611 Lobe Separation:109 LC Includes Lifters:No 2000-5900. Big Mama Rattler, Lopey idle, street or street/strip. Needs 9.0:1 compression, 2500+ stall.
Ford 351C/M-400 1970-1983 Adv. Duration:296/304 Duration @ .050":243/251 Lift:.611/.594 Lobe Separation:109 LC Includes Lifters:No 2400-66200. Big Daddy Rattler, Rough idle. Pro street or street/strip. Needs 9.5:1 compression 2800+.