The LS Family Production & C5R Aluminum Heads

The LS Family Production & C5R Aluminum Heads

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 General Motors’ 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 C5R)
• Center-bolt valve cover hold-downs
• Fits Gen III and Gen IV Small-Blocks only*