These Big Chief cylinder heads from Dart put Pro Stock technology within the reach of every racer and engine builder. They have what it takes to win today: spread intake ports, shallow valve angles, efficient combustion chambers, raised exhaust runners, and a valvetrain that's reliable at high rpm. That's some serious performance, right out of the box!

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AFR Intake Valve, BBF 11/32” Stainless Steel 2.250 X 5.245 O.A.L. Race, Set

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