Ford - 351C, 351M & 400 Performance level - Supercharger - Designed for B&M/Roots type supercharged street/strip and marine applications. Emphasis on mid to top end. INT/EXH - Dur @ .050” Lift: 246°/246° RR: 1.73/1.73 Gross Lift: .548”/.548” LSA: 114° RPM: 2400 to 6500 Redline: 6500 Learn More