Using proprietary Speed Flow™ technology, Dart has developed more efficient port designs with improved velocity and flow capabilities. The combustion chambers and ports have been redesigned for greater breathing characteristics and more controllable combustion. Casting walls are cleaner and more consistent, resulting in better control over flow and heat.

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Trick Flow Cylinder Head, GenX®, Assembled, Aluminum, 235cc Intake Runner, 64cc Chamber, For Chevrolet, For Pontiac, Each

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AFR Cylinder Head, 23° SBC 195cc Street Competition Package Heads w/heat riser, L98 plug, 75cc chambers, complete w/parts, Pair

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Trick Flow Cylinder Head, GenX® 255, Aluminum, Bare, 69cc Chamber, 255 cc Intake, GM, 6.2,.7.0L, LSX Block, Each

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