Standard Base Circle

Chevrolet - 262, 267, 283, 302, 305, 307, 327, 350 & 400
Performance level 4 - Torque Beast Roller - Torque and mid-range power for drag and oval track racing. Cast steel core.
INT/EXH - Dur @ .050” Lift: 240°/248° RR: 1.5/1.5 Gross Lift: .546”/.564” LSA: 112° RPM: 2500 to 6500 Redline: 7000 Learn More

Chevrolet - 262, 267, 283, 302, 305, 307, 327, 350 & 400
Performance level 4 - Power Beast Roller - Mid-range torque with emphasis on top end horsepower. Cast steel core.
INT/EXH - Dur @ .050” Lift: 244°/253° RR: 1.5/1.5 Gross Lift: .564”/.582” LSA: 110° RPM: 2750 to 6750 Redline: 7000 Learn More

Chevrolet - 262, 267, 283, 302, 305, 307, 327, 350 & 400
Performance level 5 - Ultra Beast Roller - Intended for performance applications with emphasis on top end. Cast steel core.
INT/EXH - Dur @ .050” Lift: 253°/261° RR: 1.5/1.5 Gross Lift: .582”/.603” LSA: 108° RPM: 3000 to 7000 Redline: 7250 Learn More