Chevrolet - 200 90° & 229 90° (3.8L) Performance level 5 - Hi-Draulic Hauler - Explosive mid to top end power with emphasis on the upper end. INT/EXH - Dur @ .050” Lift: 228°/244° RR: 1.5/1.5 Gross Lift: .509”/.498” LSA: 108° RPM: 2500 to 6500 Redline: 6500 Learn More