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Chevrolet Performance LSX-SC Cylinder Heads 19417408
Part Number: NAL-19417408
Chevrolet Performance LSX-SC Cylinder Heads
Cylinder Head, LSX-SC, As-Cast, 70cc Combustion Chamber, Bare, Aluminum, Natural, Chevy, Each
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Estimated Ship Date: Oct 22, 2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
19417408
Part Type:
Product Line:
Summit Racing Part Number:
NAL-19417408
Combustion Chamber Volume (cc):
70
Intake Runner Volume (cc):
270cc
Exhaust Runner Volume (cc):
85cc
Cylinder Head Style:
Bare
Cylinder Head Material:
Cast aluminum
Intake Port Shape:
Rectangular
CNC-Machined Combustion Chamber:
No
CNC-Machined Intake Runner:
No
CNC-Machined Exhaust Runner:
No
Intake Port Location:
Standard
Exhaust Port Location:
Standard
Spark Plug Style:
Angle
Intake Valves Included:
No
Exhaust Valves Included:
No
Valve Springs Included:
No
Damper Spring Included:
No
Retainers Included:
No
Locks Included:
No
Valve Stem Seals Included:
No
Rocker Arm Studs Included:
No
Rocker Arms Included:
No
Rocker Arm Nuts Included:
No
Guideplates Included:
No
Valve Cover Mounting Style:
Centerbolt
Accessory Bolt Holes Drilled:
Yes
Intake Valve Angle:
12
Exhaust Valve Angle:
12
Valve Guides Included:
Yes
Valve Seats Machined:
No
Valve Seat Machine Style:
Un-machined seat
Cylinder Head Color:
Natural
Steam Holes Drilled:
No
Machined for O-Ring:
No
Heat Crossover:
No
Remanufactured:
No
Quantity:
Sold individually.
Chevrolet Performance LSX-SC Cylinder Heads
Chevrolet Performance LSX-SC cylinder heads are developed for big-boost levels and high-horsepower engines. Undergoing a Hot Isostatic Pressing (HIP), this process is a way of casting that removes the air pockets while improving the mechanical properties of the components. LSX-SC cylinder heads are the same ones you'll see on Chevrolet's COPO 350 engine. They're available in three different configurations: as-cast; bare with CNC-machined features; or fully assembled CNC-machined cylinder heads complete with valves and springs.
Features and benefits include:
* Signature LSX 6-bolt head-clamping pattern
* Increased deck thickness from 0.650 in. to 0.750 in.
* Exhaust face thickness increased from 0.177 in. to 0.300 in.
* Dense T356 aluminum material
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Instructions & Calculators
Some parts are not legal for use in California or other states with similar laws / regulations
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