Product Overview
Cast From Prime A356 T6 Aluminum, Steel Alloy Intake/Exhaust Valve Seats, Manganese-Bronze Valve Guides, 63cc Combustion Chamber, Made in the USA, Retains Ford OEM Intake/Exhaust Port Location, 20 Degree Inline Valve Angle, Premium Stainless Steel Valves, 2.05 in. Intake/1.60 in. Exhaust, 145 lbs. 1.80 in. Valve Spring Closed Pressure, 358 lbs. 1.175 in. Valve Spring Open Pressure, Coil Bind at 1.100 in., 0.650 in. Max Lift
