Rockers

Chevrolet - 366, 396, 402, 427, 454, 502 & Rodeck
Performance level - Beast - Superior upper bottom, mid-range and top end power.
INT/EXH - Dur @ .050” Lift: 245°/253° RR: 1.7/1.7 Gross Lift: .612”/.636” LSA: 110° RPM: 2900 to 6050 Redline: 6500 Learn More

Chevrolet - 366, 396, 402, 427, 454, 502 & Rodeck
Performance level - Beast - Superior upper bottom, mid-range and top end power.
INT/EXH - Dur @ .050” Lift: 253°/260° RR: 1.7/1.7 Gross Lift: .636”/.659” LSA: 110° RPM: 3120 to 6100 Redline: 6500 Learn More

Chevrolet - 366, 396, 402, 427, 454, 502 & Rodeck
Performance level 4 - Street Roller - Intended for performance oriented hot-street applications.
INT/EXH - Dur @ .050” Lift: 242°/250° RR: 1.7/1.7 Gross Lift: .581”/.573” LSA: 112° RPM: 2500 to 6000 Redline: 6750 Learn More

Chevrolet - 366, 396, 402, 427, 454, 502 & Rodeck
Performance level 5 - Ultra-Action - High torque and midrange profile for bracket and marine applications.
INT/EXH - Dur @ .050” Lift: 256°/266° RR: 1.7/1.7 Gross Lift: .641”/.636” LSA: 107° RPM: 2800 to 6800 Redline: 7200 Learn More

Chevrolet - 366, 396, 402, 427, 454, 502 & Rodeck
Performance level 4 - Street Roller - Intended for performance oriented hot-street applications.
INT/EXH - Dur @ .050” Lift: 254°/260° RR: 1.7/1.7 Gross Lift: .580”/.587” LSA: 112° RPM: 2500 to 7000 Redline: 7250 Learn More

Chevrolet - 366, 396, 402, 427, 454, 502 & Rodeck
Performance level 4 - Street Roller - Intended for performance oriented hot-street applications.
INT/EXH - Dur @ .050” Lift: 252°/254° RR: 1.7/1.7 Gross Lift: .585”/.578” LSA: 112° RPM: 2500 to 7000 Redline: 7000 Learn More

Chevrolet - 366, 396, 402, 427, 454, 502 & Rodeck
Performance level 5 - Ultra-Action - Strong mid-range design for bracket and marine use.
INT/EXH - Dur @ .050” Lift: 260°/270° RR: 1.7/1.7 Gross Lift: .651”/.677” LSA: 107° RPM: 3000 to 7000 Redline: 7500 Learn More

Chevrolet - 366, 396, 402, 427, 454, 502 & Rodeck
Performance level 5 - Ultra-Action - Super competition profile.
INT/EXH - Dur @ .050” Lift: 288°/290° RR: 1.7/1.7 Gross Lift: .777”/.731” LSA: 110° RPM: Varies on valve train, heads, manifold, etc... to Redline: Learn More

Chevrolet - 366, 396, 402, 427, 454, 502 & Rodeck
Performance level 5 - Ultra-Action - Super competition profile.
INT/EXH - Dur @ .050” Lift: 286°/292° RR: 1.7/1.7 Gross Lift: .801”/.780” LSA: 110° RPM: Varies on valve train, heads, manifold, etc... to Redline: Learn More

Chevrolet - 366, 396, 402, 427, 454, 502 & Rodeck
Performance level 5 - Ultra-Action - Strong mid-range design for bracket and marine use.
INT/EXH - Dur @ .050” Lift: 270°/276° RR: 1.7/1.7 Gross Lift: .678”/.661” LSA: 107° RPM: 4500 to 8000 Redline: 8400 Learn More