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GM ATK Short Blocks

Every great build needs a solid foundation! For that reason, we take the hard work out of the picture by selling short blocks that are ready for you to complete yourself. Our GM Short Blocks are most commonly packaged as the engine block assembled with Pistons, Piston Rings and Crankshaft installed.

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Chevy 496 Stroker Short Block Crate Engine
ATK SP98 Chevy 489/496CI Stroker Short Block +20cc Dome Pistons 1pc Seal
Our Price (USD): $4,242.00

Bullet proof bottom end perfect for street or race builds, features one of the best forged stroker kits Scat makes.

We have swapped over to the later model Gen V 1991-1995 engine blocks as the foundation which has NO provisions for a mechanical fuel pump.
more info
Chevy 496 Stroker Short Block Crate Engine
ATK SP41-1P Chevy 489/496CI Stroker Short Block +20cc Dome Pistons 1pc Seal
Our Price (USD): $4,454.00

Bullet proof bottom end perfect for street or race builds, features one of the best forged stroker kits Scat makes. This is our new version of our former #SP41. We have swapped over to the later model Gen V 1991-1995 engine blocks as the foundation which has NO provisions for a mechanical fuel pump. more info
Chevy 427 Short Block Forged Crate Engine
ATK SP48 Chevy 427CI Short Block Flat Top Pistons
Our Price (USD): $5,586.00

This is a small block with big cubic inches great foundation for aggressive street builds or race builds. more info
Chevy 540 Short Block Crate Engine
ATK SP44 Chevy 540CI Short Block -10cc Dome Pistons
Our Price (USD): $5,899.00

This short block has fully forged rotating assemble, and Dart block it will hold big power reliably. more info
Chevy 598 Short Block Forged Crate Engine
ATK SP45 Chevy 598 Short Block Flat Top Pistons
Our Price (USD): $6,099.00

This bullet proof short block is designed for racing or max effort street build; drive train upgrades may be needed. more info
ATK SP99-B Crate Engine
ATK SP99-B Dart SHP LS Next 388CI Boost Ready Short Block
Our Price (USD): $6,700.00

When a stock block isn't enough, this is what you want! This shortblock is built with the perfect combination for people looking to make big power! Using all name brand components, hand built, balanced and blueprinted, its hard to be an ATK Boost Series setup! more info
ATK SP101 Crate Engine
ATK SP101 Dart SHP LS Next 427CI NA Short Block
Our Price (USD): $6,800.00

When a stock block isn't enough, this is what you want! This shortblock is built with the perfect combination for people looking to make big power! Using all name brand components, hand built, balanced and blueprinted, its hard to be an ATK setup! more info
ATK SP101-B Crate Engine
ATK SP101-B Dart SHP LS Next 427CI Boost Short Block
Our Price (USD): $6,999.00

When a stock block isn't enough, this is what you want! This short block is built with the perfect combination for people looking to make big power! Using all name brand components, hand built, balanced and blueprinted, its hard to be an ATK setup!

Upgrade to a CCW Crankshaft for an additional $350.00. CCW cranks are meant for high boost/RPM applications.
more info