Cylinder Head Machining$380.00 – $500.00 Valves, Port/Polish, Clearancing Option Choose an optionMachine seats for +2mm valvesMachine heads & install +4.5mm Intake valve seatsClear Cylinder Head Machining quantity Add to cart SKU: N/A Category: Services Description Description Long Description Related products Port and Polish $520.00 – $1,300.00 Select options ECU Re-Flashing $300.00 – $400.00 Select options Engine Assembly $910.00 – $1,235.00 Select options Throttle Body Boring $221.00 Select options