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Pontiiac 287-455 high performance aluminum roller rocker arm

● 2024 extrusion aluminum rocker bodies
● Capable of withstanding valve spring loads up to 800lbs
● Poly locks and required to match the model
● Wide assortment of ratios to suit almost any cam profile
● Internal oiling system for long-lasting perform
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● This high-performance series aluminum rocker arm is made from high-strength 2024 aluminum extrusions with CNC machined.
● CNC ground trunnion with high-performance needle roller bearings for good rocker arm operation.
● Pushrod cups are heat treatment hardened and black oxide coated.
● Cr40 steel rollers and shafts are centerless ground.
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