Chevrolet Performance LSX-LS7 CNC-Ported Cylinder Head -19354239. Great cylinder head airflow is yours with Chevrolet Performance LSX cylinder heads. With power-building attributes, these aluminum heads are manufactured from 319-T5 aluminum alloy and assembled with premium lightweight hollow-stem valves, sodium-filled exhaust valves and--on some models--titanium intake valves. Ensure maximum airflow and exceptional performance with Chevrolet Performance LSX cylinder heads. 6-bolt per cylinder bolt pattern. LS7 style rectangle port design. Assembled with 2.200" titanium intake and 1.610". 12° valve angle, Minimum 4.100 bore. 270cc "as-cast" intake ports, 85cc "as-cast" exhaust ports. 70cc "as-cast" combustion chambers. 650 lift with premium springs. Uses LS7 rocker arms/LS7 bolts. Sorry, our items are NOT available for…

All LSX heads are made of 356-T6 aluminium and feature a 5/8'' thick deck that allows plenty of room for builder-specified combinations. Extra material cast in the port areas to accommodate professional porting. Uses 11mm (10) and 8mm (13) head bolts. 6-bolt per cylinder bolt pattern. LS7 style rectangle port design. 12 degree valve angle. Uses LS7 rocker arms/LS7 bolts. Accommodates production valvetrain components (except for Drag Race and Circle Track heads). Includes premium beehive-type valve springs (except for Drag Race and Circle Track heads). Valve guides for 8mm valve stems (except for Drag Race and Circle Track heads). Assembled with 2.200" titanium intake and 1.610". 12° valve angle, Minimum…

All LSX heads are made of 356-T6 aluminium and feature a 5/8'' thick deck that allows plenty of room for builder-specified combinations. Extra material cast in the port areas to accommodate professional porting. Uses 11mm (10) and 8mm (13) head bolts. 6-bolt per cylinder bolt pattern. LS7 style rectangle port design. 12 degree valve angle. Uses LS7 rocker arms/LS7 bolts. Accommodates production valvetrain components (except for Drag Race and Circle Track heads). Includes premium beehive-type valve springs (except for Drag Race and Circle Track heads). Valve guides for 8mm valve stems (except for Drag Race and Circle Track heads). Assembled with 2.200" titanium intake and 1.610". 12° valve angle, Minimum…