Speedmaster PCE281.2142 Fits Mopar Fits Chrysler BB 383 440 325cc 78cc CNC Hydraulic Flat Assembled Cylinder Heads

Assembly Specifications Max Lift: .650 Coil Bind: .725 Intake Install: 135lbs @ 1.9 Exhaust Install: 135lbs @ 1.9 Closed Sear Pressure: 135lbs Open Seat Pressure: 280lbs INTAKE/EXHAUST GASKETS _x000D_ Chrysler 400: _x000D_ Intake - Fel Pro 1216 / PCE349.1023 _x000D_ Exhaust - Fel Pro 1414 _x000D_ (May need a small amount of trimming) _x000D_ _x000D_ HEAD GASKETS _x000D_ The 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 PCE281.1773 we recommend the Fel Pro #519SD ( on Magnum Engines), or #1008 (on LA-series Engines). For the new Speedmaster PCE281.1654 Aluminum heads, we only recommend using Speedmaster PCE348.1010 or Felpro #1008 head gaskets. _x000D_ _x000D_ HEAD BOLTS / STUDS _x000D_ For the PCE281.1776 4-cyl.

• Assembled with the finest premium components to provide your engine with optimal airflow for maximum engine performance
• Improved power throughout the rpm range for greater throttle response and top-end horsepower