Katech Engineering LLC - Engine Blocks

Engine Components  - Engine Blocks

Katech Performance Short Blocks and Long Block Assemblies - The Foundation for Extreme Horsepower 

Katech performance engine block assemblies are engineered as high-performance foundations for street and competition applications. This category includes precision-machined engine blocks, professionally assembled short blocks, and complete long block assemblies built for durability and repeatable output. Each assembly begins with strict dimensional control to ensure accurate bore geometry, deck flatness, and main housing alignment, all of which are critical to ring seal, bearing stability, and long-term reliability under elevated cylinder pressure and sustained RPM.

Short blocks are assembled with matched crankshafts, connecting rods, pistons, rings, and bearings configured for the intended power level and operating range. Rotating assemblies are balanced and clearanced according to application requirements, whether naturally aspirated or forced induction. Compression ratio targets, piston design, and ring package selection are specified to support combustion efficiency, structural integrity, and consistent oil control.

Long block assemblies expand on the short block foundation by incorporating cylinder heads, valvetrain components, timing systems, and sealing strategies engineered for airflow efficiency and mechanical stability. Camshaft selection, valvetrain geometry, pushrod length, spring control, and oiling provisions are addressed during assembly to ensure repeatable performance under load.

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Items 1-15 of 15
In Stock
Description: In stock!
Item #: KAT-A7000-58
Condition: New
Price: $9,449.99
Qty:

Description: 416 LS Short Block For Boosted Applications
Item #: 416CILSB
Condition: New
Price: $12,074.99
Qty:

In Stock
Description: In stock!
Item #: KAT-A7000-58-LSA
Condition: New
Price: $9,974.99
Qty:

In Stock
Description: In Stock!
Item #: KAT-A7000-24-LSA
Condition: New
Price: $9,974.99
Qty:

Description: LS7 Short Block for N/A Applications
Item #: KAT-LS7SB
Condition: New
Price: $12,914.99
Qty:

Description: For 1500hp+
Item #: KAT-DARTLS7SB
Condition: New
Price: $16,824.99
Qty:

Backordered
Description: NEW Engine
Item #: GMP-12716403
Condition: New
Price: $9,974.99
Qty:

Description: LT1/LT4 Sleeved Block
Item #: KAT-A6965B-4125
Condition: New
Price: $6,299.99
Qty:

Description: LT1/LT4 Short Block for Naturally Aspirated Applications
Item #: KAT-A7830
Condition: New
Price: $11,549.99

Description: LT1/LT4 Short Block for Boosted Applications
Item #: KAT-A7779
Condition: New
Price: $11,759.99

Description: New LT Block
Item #: KAT-A7806
Condition: New
Price: $14,699.99
Qty:

Price: $12,389.99
Qty:

Price: $9,999.99
Qty:

Backordered
Description: For LS1/LS2/LS3/LS6/L92/LQ4/LQ9/LM7
Item #: KAT-A4122
Condition: New
Price: $590.99
Qty:

In Stock
Description: For LT1/LT4
Item #: KAT-A6985
Condition: New
Price: $590.99
Qty:

Items 1-15 of 15

More About Engine Blocks

Why Choose Katech

Katech engine block assemblies are informed by decades of professional motorsports engine development and in house machining expertise. That experience directly influences bore finish specification, ring seal strategy, deck preparation, bearing clearance targets, and rotating assembly balance procedures. Every short block and long block is assembled using controlled processes designed to support reliability at elevated power levels and sustained operating conditions.

Whether serving as the structural base for a custom street build or a dedicated race program, Katech block based assemblies provide the dimensional accuracy, mechanical stability, and engineering accountability required for serious performance applications.