Speedmaster PCE281.2151 Fits Chrysler SB 318 360 190cc 68cc CNC Hydraulic Roller Assembled Cylinder Heads

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. Chrysler 318 - 360: (PCE281.1773) Cast Iron _x000D_ Intake - Mopar #4876049 _x000D_ Exhaust - Mopar #MS95480 _x000D_ Chrysler 318 - 360: (PCE281.1654) Aluminum _x000D_ Intake - PCE349.1010 or FelPro 1213 _x000D_ Exhaust - SM3275 or Felpro 1413 _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. head, use ARP #241-3701 (bolts) or #241-4701 (studs), and follow ARP's recommended torque values. Also, make sure you follow the OEM torque sequence! For the PCE281.

• 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