Ford Hydraulic Roller Camshaft (For Engines originally equipped with Roller cam)
Ford - 221, 255 (4.2L), 260, 289, 302(5.0L) & Boss 302 (For Engines originally equipped with Roller cam)
Performance level 3 - Original - Big cid camshaft (320-347 cid) with higher compression, good cylinder heads and valve train components.
INT/EXH - Dur @ .050” Lift: 228°/234° RR: 1.6/1.6 Gross Lift: .512”/.531” LSA: 112° RPM: 2600 to 6000 Redline: 6500
221, 255 (4.2L), 260, 289, 302(5.0L) & Boss 302
.000" intake and .000" exhaust
Advertised Duration: Intake / Exhaust
Duration @ .050" Lift: Intake / Exhaust
Lobe Lift: Intake / Exhaust
Rocker Ratio: Intake / Exhaust
Gross Valve Lift: Intake / Exhaust
Big cid camshaft (320-347 cid) with higher compression, good cylinder heads and valve train components.
Level 3 camshafts are designed for moderately modified engines. Intended for performance hot street/strip and performance marine applications.
These higher lift and longer duration camshafts demand close attention to rear end gearing and tire diameter combinations. The secret here is to pick a ring and pinion gear set and tire diameter that keeps the engine in its optimum rpm power range. Automatic transmissions with an aftermarket high stall torque converter and manual transmissions. Headers, dual exhaust, larger than stack carburetor, performance manifold and increased compression (9.5:1 to 10.5:1) are required. Mild porting and larger valves will improve performance.
Recommended Kit #1
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