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200 Spring Rate 780 Max Coil Bind 1
They sleeve the head bolt columns between the intake ports to maximize the cross-sectional area at a critical point in the flow path
IK 180 355 - 406 9
Exhaust ports accommodate a standard Chevy pattern only
Bare heads available fully CNC ported with 190cc Intake Ports and 65cc Chambers (flow numbers not yet available)
DART PRO 1 SBC 180/64CC 2.02/1.6 COMPLETE HEADS #11211111P FREE VALVE COVERS 200 Spring Rate 780 MaxCALL SHANON AT 507 445 3235 WITH ANY QUESTIONS. FREE ALUMINUM DART VALVE COVERS! SB Chevy Aluminum Complete Pro 1 Cylinder Heads #11211111P Port Volume: 180cc Chamber Volume: 72cc Spark Plug: Angle Intake Valve: 2. 02 Exhaust Valve: 1. 60 Springs: 1. 250 single springs for flat tappet hydraulic cams up to . 510 lift. Full Platinum treatment utilizing wet flow technology. Independent tests have demonstrated a typical 25 horsepower gain over the