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Chevrolet Performance Parts - 12578449 - LS7 (Gen IV) CNC Cylinder Head Assembly

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12578449 - LS7 (Gen IV) CNC Cylinder Head Assembly

This product may require vehicle validation(s) for proper fitment. Please contact us to confirm correct vehicle fitment and usage.

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SKU: 12578449

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Availability: Discontinued

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Description

Complete GM LS7 Cylinder Head Assembly

356-T6 aluminum
Fully CNC'd ports & chambers
C5R / LS7 rectangle port design - Requires intake manifold part number 25534394 or 12568976
Assembled with 2.20" titanium intake and 1.61" sodium filled exhaust valves
12 valve angle
Designed for big bore blocks: LS7, C5R, LSX or Warhawk
270cc CNC'd intake ports
85cc CNC'd exhaust ports
70cc CNC's combustion chambers
All fasteners are metric
capable of over 600 HP
Bare head # 12575450 is also available

Head contains the following components:

12591644 intake valve

12578455 exhaust valve

12578457 valve spring

10166345 valve lock

12596508 valve spring retainer

12482063 intake stem seals

12482062 exhaust stem seals

12596509 intake lash cap

Flow Data:

Lift	.100"	.200"	.300"	.400"	.500"	.550"	.600"	.700"
Intake Flow	71	145	222	271	315	332	348	352
Exhaust Flow	60	120	159	192	207	214	219	221

Related Install Parts:
New Coil on Cover Holley Valve Covers
GM Performance LS Head Bolt Package
GM Performance LS Head Gaskets
GM LS Valve Cover Bolts with Seal
GM LS Valve Cover Gasket Seal
GM Performance Exhaust Manifold Gasket
GM Performance Intake Manifold Gasket Seal Kit

Application List

Universal

Details

SKU: 12578449
Item #: 12578449
Brand: Chevrolet Performance Parts

Availability Remarks: Discontinued
Condition: New

Categories

Discontinued Parts
Discontinued Parts

Shipping Information

Requires Shipping: Item Requires Shipping
Weight: 24.8 lbs.
Package Dimensions: W8.5000” x H6.4000” x L21.2000”
Shipping Remarks: No Longer Available

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