Chevrolet Performance 12675871 GM LS Cylinder Head, Assembled, 260cc Intake, 68.4cc Chamber, Each

$868.81
MSRP: $941.68
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SKU:
GMP12675871
MPN:
12675871
Condition:
New
Weight:
23.50 LBS
Shipping:
Calculated at Checkout

Applies To Continental U.S. orders only

Out of stock

Stock replacement, LS3 aluminum rectangular port cylinder head is assembled with 2.165" intake and 1.590" exhaust valves, 1.290" valve springs, retain-ers, locks, and seals. Heads include 68.4cc combustion chambers and D-shaped exhaust ports. Engineered for use on 4-bolt, LS-based engines with a 4.000"+ cylinder bore. Sold each.
Cylinder Head Style:
Assembled
Cylinder Head Material:
Cast aluminum
Cylinder Head Finish:
Natural
CNC-Machined Combustion Chamber:
No
Combustion Chamber Volume (cc):
68.4cc
Combustion Chamber Style:
Heart
CNC-Machined Intake Runner:
No
Intake Runner Volume (cc):
260cc
Intake Port Shape:
Rectangular
Intake Port Location:
Standard
Intake Valve Angle:
15 degree
CNC-Machined Exhaust Runner:
No
Exhaust Runner Volume (cc):
N/A
Exhaust Port Shape:
D-port
Exhaust Port Location:
Standard
Exhaust Valve Angle:
15 degree
Intake Valves Included:
Yes
Intake Valve Diameter (in.):
2.165 in.
Exhaust Valves Included:
Yes
Exhaust Valve Diameter (in.):
1.590 in.
Valve Type:
N/A
Maximum Valve Lift (in.):
0.570 in.
Valve Springs Included:
Yes
Valve Spring Type:
Single
Outside Diameter of Outer Spring (in.):
1.290 in.
Valve Guides Included:
Yes
Valve Guide Material:
Powdered metal
Valve Seats Machined:
Yes
Valve Seat Material:
Steel
Valve Seat Machine Style:
N/A
Retainers Included:
Yes
Retainer Material:
Steel
Valve Stem Seals Included:
Yes
Valve Stem Seal Style:
Positive stop
Locks Included:
Yes
Lock Style:
N/A
Camshaft Style:
Hydraulic roller
Spark Plug Style:
Angled
Guideplates Included:
No
Guideplate Pushrod Size:
N/A
Rocker Arm Studs Included:
No
Rocker Arm Nut Thread Size:
N/A
Accessory Bolt Holes Drilled:
Yes
Valve Cover Mounting Style:
Centerbolt
Heat Crossover:
No
Steam Holes Drilled:
No
Oiling Style:
Through pushrod
Machined for O-Ring:
No
Quantity:
Sold individually.
Notes:
These cylinder heads can only be used on 4 bolt LS-based engines with a 4.000 in. bore or larger.
Make:
Chevrolet
Engine Family:
Chevy small block Gen III/IV (LS-based engines)
Engine Sizes:
6.0L/364-7.0L/427
Years:
1999-2019