The Texas Speed 427 LT2 Stroker Short Block is built to deliver maximum displacement and serious performance capability in the C8 Corvette platform. Utilizing a re-sleeved GM LT2 aluminum block and a forged rotating assembly featuring a Callies 4.000" crankshaft, Texas Speed 6.125" Super I-Beam connecting rods, and Diamond 4.125" forged pistons, this short block is internally balanced and precision-built for aggressive naturally aspirated or power-adder applications.

With 427 cubic inches of displacement, a 10.6:1 compression ratio, and a rotating assembly rated for 1,200 horsepower, this combination provides a strong foundation for high-horsepower LT2 builds.

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HORSEPOWER CAPABILITY

1,200 HP

Rated Horsepower Capability

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INCLUDED COMPONENTS

LT2 Gen V Aluminum Bare Block with Aftermarket Sleeves
Callies Compstar 4.000" Stroke LT2 Crankshaft
Texas Speed 6.125" Super I-Beam Connecting Rod Set
Diamond 4.125" Bore Forged Pistons with -21cc Dish
ARP Main Stud Kit
Precision LT Billet Oil Restrictor
Internally Balanced Rotating Assembly

ENGINE SPECIFICATIONS

Engine Platform: Gen V LT2
Engine Displacement: 427 CID
Engine Block: GM LT2 Aluminum Block with Aftermarket Sleeves
Bore: 4.125"
Stroke: 4.000"
Rod Length: 6.125"
Crankshaft: Callies Compstar 4.000" Stroke LT2 Crankshaft
Connecting Rods: Texas Speed 6.125" Super I-Beam
Pistons: Diamond 4.125" Bore Forged Pistons, -21cc Dish
Compression Ratio: 10.6:1
Balancing: Internally Balanced Rotating Assembly
Power Rating: 1,200 Horsepower
Platform Compatibility: C8 Corvette LT2

INSTALLATION NOTES

Oil pan modification or an aftermarket oil pan is required.
Designed for naturally aspirated and power-adder applications.
Proper tuning and supporting fuel, cooling, induction, and engine management systems are required for high-performance applications.
Verify final engine configuration and vehicle compatibility before installation.
Additional vehicle-specific components may be required depending on the application.

Note: The 1,200 HP figure represents the rated horsepower capability of the short-block combination and is not a guaranteed engine output. Final horsepower will depend on the complete engine combination, induction system, power adder, fuel system, tuning, and supporting components. Oil pan modification or an aftermarket oil pan is required.