Katech Engineering LLC - Performance GM Cylinder Heads, Components & CNC Porting

Cylinder Heads, Components & CNC Machining Services - Performance GM Cylinder Heads, Components & CNC Porting

Performance GM Cylinder Heads, Components & CNC Porting

Cylinder heads play a critical role in how a GM engine produces power. By controlling airflow and combustion, they directly affect performance, efficiency, and reliability. Whether upgrading or rebuilding, selecting the right cylinder head components and services is essential to achieving consistent results.

This category includes complete GM cylinder heads, valvetrain components, and CNC porting and machining services for LS, LT, and other GM performance engines. Each solution is developed to support increased airflow, stable valvetrain operation, and durability under demanding conditions.

  • Supports improved airflow and combustion efficiency
  • Maintains valvetrain stability at higher RPM
  • CNC-machined for consistent fitment and repeatability
  • Suitable for performance street and competition engines
  • Designed for GM LS, LT, and other performance platforms

Katech offers complete cylinder head assemblies as well as individual components including valves, springs, retainers, guides, seals, and related hardware. CNC porting and machining services refine airflow characteristics while maintaining proper head structure and long-term reliability through controlled machining processes.

All development, machining, and validation is performed in-house at Katech’s Clinton Township, Michigan facility using the same processes applied to professional motorsports programs.

Browse Performance GM Cylinder Heads, Components & CNC Porting Products

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Items 61-106 of 106
In Stock
Description: For LT4 heads
Item #: KAT-7833
Condition: New
Price: $13.99
Qty:

Backordered
Description: Ferrea LS7 Hollow Stem Exhaust Valve
Item #: FER-F2042-8
Condition: New
Price: $459.99
Qty:

Description: Gen 3/4 Stainless steel exhaust valve
Condition: New
Price: $28.49

Description: Gen 3/4 Stainless steel intake valve
Condition: New
Price: $28.49

In Stock
Description: 19 Needed plus 1 odd bolt part number GMP-11611976
Item #: GMP-11546959
Condition: New
Price: $4.99
Qty:

In Stock
Description: GM LT4 & LT5 Titanium Engine Intake Valve
Item #: GMP-12650770
Condition: New
Price: $123.99
Qty:

In Stock
Description: Gen 5 LT4
Item #: GMP-12654622
Condition: New
Price: $91.99
Qty:

In Stock
Description: OEM LS2 & LS6 Cylinder Head Gasket
Item #: GMP-12589227
Condition: New
Price: $73.99
Qty:

In Stock
Description: SET OF 8 | singles use 12645472
Item #: GMP-12482062
Condition: New
Price: $52.99
Qty:

Backordered
Description: Seal/seat combination style, set of 8 for singles use 12645673
Item #: GMP-12482063
Condition: New
Price: $48.99
Qty:

In Stock
Description: SINGLE SEAL ONLY
Item #: GMP-12457652
Condition: New
Price: $4.99
Qty:

In Stock
Description: OEM GM Genuine Parts LT Exhaust Manifold Gasket
Item #: GMP-12657093
Condition: New
Price: $20.99
Qty:

In Stock
Description: GM Genuine Parts Gen 5 LT1 & LT2 Cylinder Head Gasket
Item #: GMP-12688943
Condition: New
Price: $83.99
Qty:

In Stock
Description: OEM GM LS3 Intake Valve
Item #: GMP-12569427
Condition: New
Price: $59.99
Qty:

In Stock
Description: OEM GM Inconel LS3 Exhaust Valve
Item #: GMP-12612427
Condition: New
Price: $35.99
Qty:

Backordered
Description: OEM GM Inconel LT1/LT4 Exhaust Valve
Item #: GMP-12733470
Condition: New
Price: $35.99
Qty:

In Stock
Description: Single Seal Only
Item #: GMP-12533586
Condition: New
Price: $4.99
Qty:

Backordered
Description: OEM GM L92 Intake Valve solid stem also fits LS3/LSA/LS9
Item #: GMP-12627970
Condition: New
Price: $26.99
Qty:

In Stock
Description: LS Header Exhaust Manifold Gasket | DOES NOT FIT LS7
Item #: GMP-12617944
Condition: New
Price: $22.99
Qty:

Backordered
Description: LS1 & LS6 Cylinder Head Gasket
Item #: GMP-12589226
Condition: New
Price: $59.99
Qty:

In Stock
Description: OEM LS3 cylinder head gasket
Item #: GMP-12610046
Condition: New
Price: $102.99
Qty:

In Stock
Description: OEM GM LS3 Exhaust Valve
Item #: GMP-12582719
Condition: New
Price: $33.99
Qty:

In Stock
Description: OEM LS7 Cylinder Head Gasket
Item #: GMP-12582179
Condition: New
Price: $75.99
Qty:

In Stock
Description: LS7 D Port Exhaust Manifold Gasket
Item #: GMP-12594171
Condition: New
Price: $54.99
Qty:

Backordered
Description: OEM GM LS7 Exhaust Valve
Item #: GMP-12618110
Condition: New
Price: $62.99
Qty:

In Stock
Description: LS7, LS9, LT4 & LT5 Intake Valve Rocker Arm Lash Cap Wear Pad Kit
Item #: GMP-19302366
Condition: New
Price: $31.99
Qty:

In Stock
Description: OEM LS9 Cylinder Head Gasket
Item #: GMP-12622033
Condition: New
Price: $87.99
Qty:

In Stock
Description: OEM LT1 & LT4 Exhaust Valve
Item #: GMP-12678746
Condition: New
Price: $33.99
Qty:

Price: $4.99
Qty:

Backordered
Description: Sold in halves. 32 required per engine
Item #: GMP-10166345
Condition: New
Price: $3.99
Qty:

In Stock
Description: GM LT1 Intake Valve
Item #: GMP-12629513
Condition: New
Price: $34.99
Qty:

In Stock
Description: Designed for use with PSI-LS1511 or PSI-LS1516 valve springs
Item #: KAT-7128
Condition: New
Price: $16.99
Qty:

In Stock
Description: Designed for use with PSI-1511 valve springs
Item #: KAT-7119
Condition: New
Price: $16.99
Qty:

In Stock
Description: For stock LS7 & LT4 Heads
Item #: KAT-4682
Condition: New
Price: $17.99
Qty:

In Stock
Description: For LS7 engines
Item #: KAT-6586-R01
Condition: New
Price: $224.99
Qty:

In Stock
Description: For LT1/LT2/LT4/LT5
Item #: KAT-7799-R01
Condition: New
Price: $224.99
Qty:

In Stock
Description: For LT1/LT2/LT4/LT5
Item #: KAT-7800
Condition: New
Price: $224.99
Qty:

In Stock
Description: Valve Seal
Item #: KAT-7481
Condition: New
Price: $2.99
Qty:

In Stock
Description: For LT4 heads
Item #: KAT-6924
Condition: New
Price: $8.99
Qty:

Description: For LS7 & LS9
Item #: KAT-
Condition: New
Price: $224.99

In Stock
Description: For LT4/LT5
Item #: KAT-7486
Condition: New
Price: $224.99
Qty:

Backordered
Description: Super Alloy
Item #: KAT-7484
Condition: New
Price: $61.99
Qty:

In Stock
Description: 1.550" diameter
Item #: EP-01-2204-8
Condition: New
Price: $21.99
Qty:

In Stock
Description: 2.00" diameter
Item #: EP-01-2220-8
Condition: New
Price: $21.99
Qty:

In Stock
Description: 2.02" diameter
Item #: EP-01-2202-8
Condition: New
Price: $21.99
Qty:

In Stock
Description: 1.57" diameter
Item #: EP-01-2200-8
Condition: New
Price: $21.99
Qty:

Items 61-106 of 106

More About Performance GM Cylinder Heads, Components & CNC Porting

Why Choose Katech

Since 1977, Katech has built its reputation through professional motorsports and GM performance engine development. That experience is applied directly to every cylinder head, component, and machining service.

  • Designed, machined, and validated in-house
  • Developed through professional motorsports programs
  • Proven through dyno testing and real-world performance
  • Built to maintain durability under load and elevated engine speeds

From street builds to professional racing applications, Katech GM cylinder head solutions support consistent airflow, stable operation, and reliable performance.