Rockers

Ford - 221, 255 (4.2L), 260, 289 & 302& Boss 302 (For engines not originally equipped with roller lifters)
Performance level 2 - Original - Most popular Ford hyd roller grind, blows away Chevrolets. Heavy mid-range.
INT/EXH - Dur @ .050” Lift: 222°/228° RR: 1.6/1.6 Gross Lift: .496”/.512” LSA: 112° RPM: 2400 to 5700 Redline: 6200

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Ford - 221, 255 (4.2L), 260, 289 & 302& Boss 302 (For engines not originally equipped with roller lifters)
Performance level 1 - Original - Launches hard with A.O.D. transmission. Torque all over the tach! Brutal bottom end.
INT/EXH - Dur @ .050” Lift: 210°/214° RR: 1.6/1.6 Gross Lift: .480”/.480” LSA: 112° RPM: 2100 to 5300 Redline: 5800

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Ford - 351W (5.8 L), 302 (5.0L), 302 SVO & 351 SVO
Performance level 4 - Power Beast - Delivers impressive midrange and top end power. Healthy sound. Economical price.
INT/EXH - Dur @ .050” Lift: 224°/234° RR: 1.6/1.6 Gross Lift: .498”/.520” LSA: 112° RPM: 1750 to 6000 Redline: 6500 Learn More

Ford - 221, 255 (4.2L), 260, 289 & 302
Performance level 2 - Baja Beast - Exhibits broad stump pulling power and torque.
INT/EXH - Dur @ .050” Lift: 204°/210° RR: 1.6/1.6 Gross Lift: .443”/.452” LSA: 112° RPM: 1200 to 3800 Redline: 4300 Learn More

Ford - 221, 255 (4.2L), 260, 289 & 302& Boss 302 (For engines not originally equipped with roller lifters)
Performance level 5 - Original - Top end insanity  for serious, professionally built engines only. 1⁄4 mile drag special.
INT/EXH - Dur @ .050” Lift: 236°/242° RR: 1.6/1.6 Gross Lift: .524”/.529” LSA: 110° RPM: 3000 to 6300 Redline: 6500

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Ford - 221, 255 (4.2L), 260, 289 & 302
Performance level 3 - Torque Beast - Delivers impressive mid-range and top end power.
INT/EXH - Dur @ .050” Lift: 210°/220° RR: 1.6/1.6 Gross Lift: .448”/.474” LSA: 112° RPM: 2000 to 4800 Redline: 5300 Learn More

Ford - 221, 255 (4.2L), 260, 289 & 302
Performance level 3 - Power Beast - Emphasis on upper mid-range and top end power.
INT/EXH - Dur @ .050” Lift: 214°/224° RR: 1.6/1.6 Gross Lift: .474”/.498” LSA: 112° RPM: 2000 to 4800 Redline: 6200

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Ford - 221 255 (4.2L) 260 289 302
Performance level 5 - Hi-Draulic Hauler - Rough idle with explosive mid-range torque and acceleration.
INT/EXH - Dur @ .050” Lift: 230°/244° RR: 1.6/1.6 Gross Lift: .507”/.506” LSA: 108° RPM: 2700 to 6000 Redline: 6500 Learn More

Ford - 221, 255 (4.2L), 260, 289 & 302
Performance level 5 - Hi-Draulic Hauler - Rough idle with explosive upper bottom and mid-range torque.
INT/EXH - Dur @ .050” Lift: 226°/238° RR: 1.6/1.6 Gross Lift: .502”/.499” LSA: 108° RPM: 2500 to 6500 Redline: 6500 Learn More

Ford - 221, 255 (4.2L), 260, 289 & 302
Performance level 4 - Hi-Draulic Hauler - Lope at idle. Hot street/ strip cam with strong mid-range power.
INT/EXH - Dur @ .050” Lift: 220°/228° RR: 1.6/1.6 Gross Lift: .491”/.512” LSA: 108° RPM: 2200 to 6200 Redline: 6500 Learn More