221,302 Boss

Ford - 221, 255 (4.2L), 260, 289, 302(5.0L) & Boss 302 (Engines originally equipped with Roller cam)
Performance level 5 - Original - Top end insanity for serious, professionally built engines only. 1⁄4 mile drag special.
INT/EXH - Dur @ .050” Lift: 236°/242° RR: 1.6/1.6 Gross Lift: .524”/.529” LSA: 110° RPM: 3000 to 6300 Redline: 6500