Katech Engineering LLC - Custom Spec Engines

Performance Parts  - Custom Spec Engines

Street or Race, Performance Engines Custom Built to Your Exact Specifications

Katech builds engines to exact specifications for street performance, track-day use, and professional competition across multiple racing disciplines. From refined street-driven engines for Corvette and Camaro platforms to full race-spec powerplants developed for IMSA, Trans Am Series, USAC, NASCAR, NHRA, and IHRA, each engine is engineered around its intended ruleset, duty cycle, and performance objectives.

Katech’s engine programs span a wide range of performance and racing applications, with extensive experience in LS and LT architectures alongside dedicated professional race engine platforms. Each engine is developed with deliberate attention to airflow management, valvetrain stability, oiling control, thermal management, and durability under sustained load or extreme acceleration. Whether the application demands endurance reliability, sprint-race response, or repeatable high-power drag performance, Katech applies race-proven engineering discipline, advanced machining capability, and strict build standards to deliver engines that perform consistently and finish events.

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Performance Parts  - Custom Spec Engines - Crate Engines, Gen 3-4 LS
Katech Crate Engines, The Heart of American Performance When you demand an engine built on decades of championship-winning expertise, look no further than Katech Engineering’s...More Details »

Custom Spec Engines Featured Products

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Items 1-11 of 11
Backordered
Description: GM LT4 longblock
Item #: GMP-12716403
Condition: New
Price: $9,974.99
Qty:

Description: 575HP LT1 Crate Engine
Item #: LT1CE575HP
Condition: New
Price: $19,162.99
Qty:

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

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

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

Price: $45,518.99
Qty:

Price: $36,870.99
Qty:

Price: $40,029.99
Qty:

Description: Engine supplied by customer.
Condition: New
Price: $26,537.49
Qty:

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

Description: LT1 block supplied by customer
Condition: New
Price: $12,389.99
Qty:

Items 1-11 of 11

More About Custom Spec Engines

Choosing a Katech custom spec engine means choosing race-proven engineering applied with precision and intent. Every engine in this category is designed to deliver dependable power, structural integrity, and repeatable performance. From custom-built street engines to full performance race-spec engines, Katech applies decades of professional motorsports experience to create engines that perform exactly as engineered.