Speedmaster PCE281.1731 Fits Mopar Fits Chrysler BB 383 440 325cc 78cc Full CNC Aluminum Bare Cylinder Head

All Speedmaster alloy cylinder heads are made using a superior "gravity die" cast process. These heads are flow tested on a Superflow SF600 at 28 inches with a 1/2 inch radius intake plate and short stack exhaust tube.INTAKE / EXHAUST GASKETS4-cyl. 2.2 / 2.5: Intake / Exhaust - MS90947 Chrysler 400: Intake - Fel Pro 1216Exhaust - Fel Pro 1414(May need a small amount of trimming)Chrysler 318 - 360: (PCE281.1773) Cast Iron Intake - Mopar #4876049 Exhaust - Mopar #MS95480 Chrysler 318 - 360: (PCE281.1654) AluminumIntake - PCE349.1010 or FelPro 1213Exhaust - SM3275 or Felpro 1413 HEAD GASKETSThe PCE281.1776 4-cyl. head is designed around an OEM head gasket. Use Mopar # P4452006. We recommend you use Fel Pro head gaskets under our Speedmaster PCE281.1728, PCE281.1731 & PCE281.1733 heads. Use Fel P5ro #1009 or 1105 (big bore) On Speedmaster PCE281.

• Great throttle response and top-end horsepower
• Highly efficient ports and state-of-the-art combustion chambers shapes for improved performance throughout the rpm range
• CNC Port design is optimised for flow and velocity