GEN 3 & GEN 4 ENGINE PACKAGES
Katech has been working with the LS1 since 1997 for the Corvette C5-R GM factory racing team. With this expertise, Katech has developed a line of race-derived, aftermarket performance crate engines and components for the enthusiast with LS1/LS2/LS3/LS6/LS7 components.




 
Street Attack 500, Desert Attack 500: 8.2L, 500in3
Now taking orders for Street Attack and Desert Attack 500 cubic inch engines. Please call for details.

 
         
 

 


 
KAT-A4730 Street Attack LS7 :  7.0L, 427in3
Top-tier LS7 performance engineered for street applications . Crate engine features Katech 11:1 compression forged pistons, solid small-end rod bushings, Torquer LS7 camshaft, and valvetrain enhancements. The perfect choice for high power, daily driven vehicles.

Application: 2006-2009 Corvette Z06, Hot rods, off-road vehicles, show cars
Displacement: 427ci, 7.0L
Bore: 4.125
Stroke: 4.000
Compression ratio: 11:1
Fuel: 93 octane
Horsepower: 600
Torque: 570
Block: LS7
Heads: LS7
Crank: LS7 forged steel or optional Callies forged steel
Connecting rods: LS7 powdered-medal Titanium, rebushed
Pistons: Katech forged aluminum with optional DLC coated pins
Camshaft: Katech Torquer LS7
Oiling system: LS7 dry sump or optional ARE Stage 1, 2, or 3
Throttle body: 90mm electronic or cable
Intake manifold: LS7

 
        Starting at $9,400 plus core
 

 
KAT-A4735 Track Attack LS7:  7.0L, 427in3

The ultimate normally-aspirated LS7 crate engine for off-road / track use applications. Drawing from over two decades of experience with championship winning pushrod V8s, this package is race ready. Features Katech 12:1 or 14:1 compression forged pistons, solid small-end rod bushings, high output camshaft and valvetrain enhancements. Available with electronic or mechanical throttle.

Application: 1997-2009 Corvette road race and drag race cars, Hot rods, off-road vehicles, show cars
Displacement: 427ci, 7.0L
Bore: 4.125
Stroke: 4.000
Compression ratio: 11:1, 12:1, 13:1 or 14:1
Fuel: 93 octane (11:1), 100 octane (12:1), 105 octane 13:1+
Horsepower: 620-685
Torque: 550-565
Block: LS7 with ARP studs
Heads: LS7 with ARP studs
Crank: Callies forged steel
Connecting rods: LS7 powdered-medal Titanium, rebushed (11:1 or 12:1), Callies H beam steel or optional Carrillo A-beam (13:1 or 14:1)
Pistons: Katech forged aluminum with DLC coated pins
Camshaft: World Challenge or GM Stage 3
Oiling system: Dailey 4 stage dry sump system
Throttle body: 90mm electronic or cable
Intake manifolld: LS7

 
        Starting at $9,400 plus core
 

 
KAT-A4735 Desert Attack LS7:  7.0L, 427in3
The purpose-built, normally-aspirated LS7 crate engine for off-road baja and trophy truck applications. Drawing from over two decades of experience with championship winning pushrod V8s, this package is off-road ready. Features Katech 10.4:1, 11:1, 12:1 or 14:1 compression forged pistons, solid small-end rod bushings, optional steel rods, high output camshaft and valvetrain enhancements. Available with electronic or mechanical throttle.
Optional single plane or Kinsler individual runner intake manifolds.

Application: Off-road Baja trucks
Displacement: 427ci, 7.0L
Bore: 4.125
Stroke: 4.000
Compression ratio: 10.4:1 11:1, 12:1, 13:1 or 14:1
Fuel: 93 octane (11:1), 100 octane (12:1), 105 octane 13:1+
Horsepower: 620-685
Torque: 550-565
Block: LS7 with ARP studs
Heads: LS7 with ARP studs
Crank: Callies forged steel
Connecting rods: LS7 powdered-medal Titanium, rebushed (11:1 or 12:1), Callies H beam steel or optional Carrillo A-beam (13:1 or 14:1)
Pistons: Katech forged aluminum with DLC coated pins
Camshaft: World Challenge or GM Stage 3
Oiling system: LS7 dry sump or Dailey 4 stage dry sump system
Throttle body: 90mm electronic or cable
Intake manifold: LS7, GM single plane, or Kinsler IR

 
        Starting at $9,400 plus core
 

 
KAT-A4740 Air Attack LS7: 7.0L, 427in3

Extreme forced induction performance for the LS7 engine. This package includes Katech forged low-compression pistons, DLC coated pinsforged steel connecting rods, main stud girdle, main and head studs, upgraded camshaft and upgraded valvetrain.

Application:2006-2009 Corvette Z06, Hot rods, off-road vehicles, show cars
Displacement: 427ci, 7.0L
Bore: 4.125
Stroke: 4.000
Compression ratio: 9.0-10.0:1
Fuel: 93 octane, 100+ recommended for high boost settings
Boost: up to 15psi
Horsepower: up to 1000
Torque: up to 850
Block: LS7 with stud girdle and ARP studs
Heads: LS7 with ARP studs
Crank: Callies forged steel
Connecting rods: Callies H-Beam forged steel
Pistons: Katech forged aluminum with DLC coated pins
Camshaft: Katech Air Attack LS7
Oiling system: LS7 dry sump
Ready for forced induction, no power adder included
Throttle body: 90mm electronic or cable
Intake manifold: LS7

 
        Starting at $21,000 plus core
 
 


 
KAT-A4740 Air Attack LS7 SC: 7.0L, 427in3

Extreme forced induction performance for the LS7 engine. This package includes Katech forged low-compression pistons, DLC coated pinsforged steel connecting rods, main stud girdle, main and head studs, upgraded camshaft and upgraded valvetrain.

Application: Hot rods, off-road vehicles, show cars
Displacement: 427ci, 7.0L
Bore: 4.125
Stroke: 4.000
Compression ratio: 9.0-10.0:1
Fuel: 93 octane
Boost: 7-10psi
Horsepower: 700-750+
Torque: 685+
Block: LS7 with stud girdle and ARP studs
Heads: LS7 with ARP studs
Crank: Callies forged steel
Connecting rods: Callies H-Beam forged steel
Pistons: Katech forged aluminum with DLC coated pins
Camshaft: Katech Air Attack LS7
Oiling system: LS7 dry sump
Supercharger: Magnuson M122 high-helix or TVS2300
Throttle body: 105mm cable

 
        $22,000 plus core
 

 
KAT-A4725 Sneak Attack LS7:  5.7L, 346in3

With an 8000rpm redline, this crate engine is ideal for that "sleeper" ride. Package includes LS7 case, Katech forged piston-rod assembly, forged crankshaft, LS7 cylinder heads, and an LS7 derived valvetrain coupled with Katech specified camshaft.
2 Stage dry sump oiling system
For off-road racing use only

Application: Racecars with displacement-limited classes, customers wishing to rev over 7000rpm
Displacement: 346ci, 5.7L
Bore: 4.125
Stroke: 3.240
Compression ratio: 12:1
Fuel: 100 octane
Horsepower: 580
Torque: 500
Block: LS7
Heads: LS7
Crank: Callies forged steel
Connecting rods: Carrillo A-Beam forged steel
Pistons: Katech forged aluminum with DLC coated pins
Camshaft: custom
Oiling system: Dailey 4 stage
Throttle body: 90mm electronic cable
Intake manifold: LS7

 
        Starting at $17,000 plus core
 

 

KAT-A4675 SCCA T1 LS6:  5.7L, 346in3
KAT-A4675 SCCA T1 LS2:  6.0L, 364in3
KAT-A4675 SCCA T1 LS3:  6.2L, 376in3
KAT-A4675 SCCA T1 LS7:  7.0L, 427in3

This package conforms to all SCCA T1 specifications. Carefully blueprinted to maximize performance within OEM tolerances.

All production components to conform to SCCA rules
 
        call
 

 
KAT-A4680 Torquer LS6:  5.7L, 346in3

Great turn-key crate engine for hot rods and cars that want more torque than factory but great reliability and factory-like manners.

Application: 1997-2004 Corvette, Hot rods, off-road vehicles, show cars
Displacement: 346ci, 5.7L
Bore: 3.898
Stroke: 3.622
Compression ratio: 10.7:1
Fuel: 93 octane,
Horsepower: 475
Torque: 450
Block: LS6
Heads: LS6, optional CNC porting
Crank: LS6
Connecting rods: LS6
Pistons: LS6
Camshaft: GM hot cam or Katech Torquer LS6
Oiling system: wet sump
Throttle body: 78mm CNC ported
Intake manifold: LS6

 
        Starting at $10,000
 

 

KAT-A4690 Torquer LS2:  6.0L, 364in3
KAT-A4690 Torquer LS3:  6.2L, 376in3

Katech Performance gives the LS2 or LS3 engine the upgrade it deserves. Features include Katech Torquer oR GM hot camshaft, Katech connecting rod bolts, and Katech ported oil pump

Application: 2005-2009 Corvette, Hot rods, off-road vehicles, show cars
Displacement: 364ci, 6.0L (LS2), 376ci 6.2L (LS3)
Bore: 4.000 (LS2), 4.060 (LS3)
Stroke: 3.622
Compression ratio: 10.9:1 (LS2) 10.7:1 (LS3
Fuel: 93 octane,
Horsepower: 485-500
Torque: 460
Block: LS2 or LS3
Heads: LS2, optional CNC porting, or LS3
Crank: LS2 or LS3
Connecting rods: LS2 or LS3
Pistons: LS2 or LS3
Camshaft: GM hot cam or Katech Torquer LS6
Oiling system: wet sump
Throttle body: 90mm electronic or cable
Intake manifold: LS2 or LS3

 
        Starting at $10,000
 

 
KAT-A4684 Value 427 short block: 7.0L, 427in3

The ideal package for the budget-conscious gearhead. Includes Katech sleeved LS2 case, forged 4340 steel crankshaft, Katech forged pistons and Callies Compstar H-beam connecting rods. Available with optional covers, camshaft and pan for Gen 3 or Gen 4 applications. Also available with low compression, nitrous or LS7 pistons.

Application: 1997-2009 Corvette, Hot rods, off-road vehicles, show cars
Displacement: 427ci 7.0L
Bore: 4.125
Stroke: 4.000
Compression ratio: 11:1
Fuel: 93 octane,
Horsepower: depends on camshaft and induction
Torque: depends on camshaft and induction
Block: Katech sleeved LS2
Crank: Cola or Callies
Connecting rods: Callies H beam
Pistons :Katech forged aluminum

 
        $6,950
 

 
Value 427 long block: 7.0L, 427in3

The Value 427 long block takes the Value 427 short block and combines it with LS3 heads and a mild camshaft. The result is 580hp and 550 lb-ft of torque.

All of the above Value 42 short block plus:

Heads: Ported LS3 or LS7
Camshaft: Katech Torquer LS3

Optional:
Throttle body: 90mm cable or electronic
Intake manifold: LS3

 
        $12096.64
 

 
Value 402 short block: 6.6L, 402in3

The ideal package for the budget-conscious gearhead. Includes GM LS2 case, forged 4340 steel crankshaft, Katech forged pistons, and Callies Compstar H-beam connecting rods. Available with optional covers, camshaft and pan for Gen 3 or Gen 4 applications. Also available with nitrous or LS7 pistons.

Application: 1997-2009 Corvette, Hot rods, off-road vehicles, show cars
Displacement: 402ci 6.6L
Bore: 4.000
Stroke: 4.000
Compression ratio: 11:1
Fuel: 93 octane,
Horsepower: depends on camshaft and induction
Torque: depends on camshaft and induction
Block: LS2
Crank: Cola or Callies
Connecting rods: Callies H beam
Pistons :Katech forged aluminum

 
        $5,800
 






 
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