AFR SBC 245cc Competition CNC Spread Port Cylinder Heads Ti Retainers 1139-TI. This product data sheet is originally written in English. AFR Direct Master Warehouse Distributor - All AFR Products Available. AFR 245cc SBC Spread Port Cylinder Heads. Spread port heads have the center exhaust ports spread apart approximately 1/2 over stock GM heads. The reason for spread port heads is to achieve additional cooling in the center of the head where the heat concentration is greatest. As standard headers do not fit, spread port headers are required since the center ports are spread further apart than stock GM products. The increased spacing on the exhaust port also requires the…

AFR Direct Master Warehouse Distributor - All AFR Products Available. AFR 245cc SBC Spread Port Cylinder Heads. Spread port heads have the center exhaust ports spread apart approximately 1/2 over stock GM heads. The reason for spread port heads is to achieve additional cooling in the center of the head where the heat concentration is greatest. As standard headers do not fit, spread port headers are required since the center ports are spread further apart than stock GM products. The increased spacing on the exhaust port also requires the use of exhaust gasket Fel-Pro #1409. Spread port heads only come with a Stahl bolt pattern. AFR's spread port head has…