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GM ATK Crate Engines

ATK specializes in muscle. With the highest quality internal parts and Dyno Proven combinations of every engine built, ATK is able to add the most bang for your buck and back it up with an industry leading warranty. Check out our three stages of performance GM Engines: they are separated by level of dress. If you don’t see what you want, we will custom build your engine; just give us a phone call.

LS Short Blocks Base Engine
LS Based Short Blocks for Naturally Aspirated, Boosted and Nitrous Applications.

High Performance Engine
with Base Level Dress

Mid Dress Engine Complete Engine

High Performance Engine
with Mid Level Dress

High Performance Engine
with Fuel & Ignition

Complete Engine with EFI Short Block

High Performance Engine
with EFI

Short Blocks for
the DIY Customer

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ATK SP03 Chevy 350CI Short Block +12.3cc Dish Pistons ATK SP04 Chevy 350CI Short Block Flat Top Pistons ATK SP06 Chevy 454CI Short Block +22cc Dome Pistons 1pc Seal
Our Price (USD): $1,339.00
Our Price (USD): $1,399.00
Our Price (USD): $2,061.00
Chevy 350 Short Block 87-95 Dish Piston Crate Engine Chevy 350 Short Block Crate Engine Chevy 454 Short Block 4 Bolt Main 1 pc Rear Main
This is a great foundation for a mild performance build or a good upgrade for a worn out short block. This is a great foundation for a mild performance build or a good upgrade for a worn out short block. This is a great foundation for a mild performance build or a good upgrade for a worn out short block.
ATK SP15 Chevy 383CI Stroker Short Block -18cc Dish Piston 1pc Seal ATK SP19 Chevy LQ4 6.0L Short Block OE Dish Pistons ATK SP06-HP Chevy 454CI Short Block Flat Top Pistons 1pc Seal
Our Price (USD): $2,061.00
Our Price (USD): $2,061.00
Our Price (USD): $2,061.00
Chevy 383 Stroker Short Block 1 pc Rear Main Chevy LQ4 6.0L Short Block Chevy 454 Short Block 4 Bolt Main 1 pc Rear Main
This short block is great for replacing a tired 350, or for getting more torque out of your hot rod. Great foundation for mild street build, or just replacement for a tired short block. This is a great foundation for a mild performance build or a good upgrade for a worn out short block.
ATK SP52 CHEVY 383CI Stroker Forged 3.7cc Flat Top Pistons ATK HP291P Chevy 350 Base Engine 325HP ATK HP31 Chevy 350 87-95 TBI Base Engine 290HP
Our Price (USD): $2,199.00
Our Price (USD): $2,349.00
Our Price (USD): $2,576.00
ATK SP52 Crate Engine Chevy 350 Base Engine 325HP Chevy 350 87-95 TBI Base Engine 290HP
This short block is great for replacing a tired 350, or for getting more torque out of your hot rod.  Your engine may not necessarily come with all components listed, but they are listed as our Classic 350 with great street manners, and vacuum for all your power accessories. This engine was designed to run with all your vehicles stock components. Must have a chip burned, upgraded intake and headers for optimal performance.
ATK HP32 Chevy 350 Base Engine 350HP ATK HP92 Chevy 350 Base Engine 315HP 2pc Rear Main Left Side Dipstick ATK HP74 Chevy 350 Vortec 96-00 Truck Base Engine 315HP
Our Price (USD): $2,599.00
Our Price (USD): $2,699.00
Our Price (USD): $2,731.00
Chevy 350 Base Engine 350HP Chevy 350 Base Engine 315HP 2pc Rear Main Left Side Dipstick Chevy 350 Vortec Base Engine 315HP
Great crate engine noticeable Idle, but still good vacuum for you power accessories. This engine has a STD bore and it 100% new with a fair idle and will run on 87 octane fuel. This engine is an upgrade for 1996-2000 Chevy trucks or SUVs the ECM must be tuned and headers are need to get the full potential out of this engine. We test this engine with an aftermarket EFI system on an engine dyno, power ratings may vary.
ATK SP75 LM7 5.3/5.7 Short Block -3.2cc Flat Top Pistons 24 Tooth ATK HP291PM Chevy 350 Mid Dress Engine 325HP ATK SP76 LM7 5.3/5.7 Short Block -11cc Dished Pistons 24 Tooth
Our Price (USD): $2,750.00
Our Price (USD): $2,799.00
Our Price (USD): $2,799.00
Chevy LM7 5.7/347 Short Block 24 Tooth Reluctor Wheel Chevy 350 Mide Dress Engine 325HP Chevy LM7 5.7/347 Short Block 24 Tooth Reluctor Wheel
This short block is built for Naturally Aspirated engines up to 700HP Classic 350 with great street manners, and vacuum for all your power accessories. This short block is built for Naturally Aspirated engines up to 700HP
ATK HP99C Chevy 350 Vortec Complete Engine 260HP+ ATK SP35 Chevy 383CI Stroker Short Block -16cc Dish Pistons 4 Bolt Main 1pc Seal ATK HP32M Chevy 350 Mid Dress Engine 350HP
Our Price (USD): $2,999.00
Our Price (USD): $3,092.00
Our Price (USD): $3,099.00
Chevy 350 Complete Engine 260HP Chevy 383 Stroker Short Block 4 Bolt Main 1 pc Rear Main Chevy 350 Mid Dress Engine 350HP
The perfect replacement engine without breaking the bank for your worn out SBC. The Vortec engines had better flowing Cylinder Heads matched with a Hyd. Roller Camshaft that make for a reliable combination with a little extra Go. Bullet proof bottom end built to handle more power with its top of the line stroker kit. Great crate engine noticeable Idle, but still good vacuum for you power accessories.
ATK HP92M Chevy 350 Mid Dress Engine 315HP 2pc Rear Main Left Side Dipstick ATK HP97 Chevy LM7 5.3L 99-07 Truck Base Engine 385HP ATK HP83NEW
Our Price (USD): $3,099.00
Our Price (USD): $3,099.00
Our Price (USD): $3,199.00
Chevy 350 Mid Dress Engine 315HP 2pc Rear Main Left Side Dipstick ATK HP83NEW Crate Engine
This engine has a STD bore and is 100% new with a fair idle and will run on 87 octane fuel. This engine was designed to be a performance upgrade for a 1999-2007 Chevy Truck LM7 or LS swap in a hot rod. Expect big mid to upper end power, will have a noticeable idle. For optimal Performance you will need headers, chassis dyno tune and upgraded injectors. Cam Specs will come with the engine. Classic 350 Chevy +50hp over stock from its performance bolt-ons, still has a stock idle.
ATK HP89 Chevy 350 Base Engine 375HP ATK HP91 Chevy 350 Base Engine 365HP 87 Octane ATK HP291PC Chevy 350 Complete Engine 325HP
Our Price (USD): $3,349.00
Our Price (USD): $3,349.00
Our Price (USD): $3,499.00
Chevy 350 Base Engine 375HP Crate Engine Chevy 350 Base Engine 345HP 87 Octane Chevy 350 Complete Engine 325HP
Great crate engine with a noticeable idle, very street able with lots of power. Great crate engine with a noticeable idle, very street able with lots of power. Classic 350 with great street manners, and vacuum for all your power accessories.
ATK SP77 LM7 383CI Short Block -8cc Dished Pistons 24 Tooth ATK SP78 LM7 383CI Short Block -15cc Dished Pistons 24 Tooth ATK SP79 LM7 383CI Short Block -32cc Dished Pistons 24 Tooth
Our Price (USD): $3,499.00
Our Price (USD): $3,499.00
Our Price (USD): $3,499.00
Chevy LM7 383CI Short Block 24 Tooth Reluctor Wheel Chevy LM7 383CI Short Block 24 Tooth Reluctor Wheel Chevy LM7 383CI Short Block 24 Tooth Reluctor Wheel
This short block is built for Naturally Aspirated engines up to 700HP This short block is built for Naturally Aspirated engines up to 700HP This short block is built for Naturally Aspirated engines up to 700HP
ATK SP80 LM7 383CI Short Block -3cc Flat Top Pistons 24 Tooth ATK SP33 Chevy LT1 Short Block 4 Bolt Main ATK SP88 LS1/LS6 347CI Short Block -3.2cc Flat Tops 24 Tooth
Our Price (USD): $3,499.00
Our Price (USD): $3,599.00
Our Price (USD): $3,599.00
Chevy LM7 383CI Short Block 24 Tooth Reluctor Wheel Chevy LT1 Short Block 4 Bolt Main Chevy LS1/LS6 5.7/347 Short Block 24 Tooth Reluctor Wheel
This short block is built for Naturally Aspirated engines up to 700HP This is a Bullet proof bottom end for your LT1 build, features one of the strongest stroker kits Scat makes. This short block is built for Naturally Aspirated engines up to 700HP