Oldsmobile - 260, 307 (5.0L,) 350 (5.7L), 400, 403, 425 & 455 (39° bank angle) Performance level 2-3 - Power Compu-Pro - These cams provide excellent low end and mid-range power and extended rpm range for spirited street and offroad driving. A perfect combination of mileage and power. Modifications should include small diameter tube headers, low restriction dual exhaust, aftermarket manifold, increased cfm carburetor and reworked or performance ignition. Increase in compression ratio to 9.5:1 is recommended for maximum output. Works well with automatic transmission or 4-speed. INT/EXH - Dur @ .050” Lift: 215°/221° RR: 1.6/1.6 Gross Lift: .488”/.494” LSA: 112° RPM: 1300-1500 to 4800 Redline: 5300 Learn More