Chevy LS7 Cylinder Head Assembly

12578449
Your Price: $1,783.71

Suggested Retail:  $1,933.56

Chevy LS7 Cylinder Head Assembly
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Product Details


THE LS FAMILY PRODUCTION AND 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 Chevrolet Performance’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.

LS7 CNC-Ported Cylinder Head Assembly
• 356-T6 aluminum head
• Fully CNC’d ports and chambers
• LS7 rectangle port design
• Assembled with 2.200" titanium intake and 1.610" sodium-filled exhaust valves
• 12° valve angle
• Minimum 4.100" bore
• 270cc CNC’d intake ports, 85cc CNC’d exhaust ports
• 70cc CNC’d combustion chambers
• Capable of over 600 horsepower
• Bare head P/N 12578450 available separately

Head P/N 12578449 assembled with the following:
•12591644 Intake Valves
• 12596508 Valve Spring Retainers
• 12618110 Exhaust Valves
• 12482063 Intake Valve Stem Seals
• 12621428 Valve Springs
• 12482062 Exhaust Valve Stem Seals
• 10166345 Valve Locks
• 12596509 Intake Valve Lash Cap

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.

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