LSA Cylinder Head Assembly

LSA Cylinder Head Assembly

12626958 Chevrolet Cylinder Head

Great cylinder-head airflow has been a key enabler of the LS-Series‘ exceptional performance. Chevrolet Performance delivers those power-building attributes to you with a range of production-style aluminum heads ? from the LS6 heads for smaller-displacement engines to LS7 style heads for 427-inch-and-larger combinations, our aluminum heads benefit from GM‘s extensive research and development program, ensuring maximum airflow without compromises. In fact, many professional builders use our heads as straight bolt-ons, with no further machining. Many of our assembled heads use premium machining and materials, including CNC finishing and porting, along with lightweight, hollow-stem valves, sodium-filled exhaust valves and ? on some heads ? lightweight titanium intake valves.

Aluminum LS Family Head Technical Notes:
? Manufactured from 319-T5 aluminum alloy
? High-efficiency combustion chambers
? Symmetrical intake and exhaust ports
? Angled spark plugs (14mm; 5/8″ hex; 3/4″ reach; taper-seat plugs)
? 15? valve angle (except C5R and LS7)
? Bolt-down-type rocker arms (except LSX-DR, LSX-CT)
? Center-bolt valve cover hold-downs
? Fits Gen III and Gen IV Small-Blocks only

NOTE: Chevrolet Performance heads will not fit 4.8L and 5.3L engines, due to their smaller bore sizes.