Short Block Engines

Get a head start on your next engine build with our selection of short block engines. Our short blocks come with a high-quality engine block and engine internals, but...

Get a head start on your next engine build with our selection of short block engines. Our short blocks come with a high-quality engine block and engine internals, but they also give you the flexibility to finish your build off however you want. Carbureted, fuel-injected, forced induction—these blocks are the perfect starting point! You can get yours with cast or forged internal components for a wide range of applications. We’ve got 302 short blocks, 351W short blocks, 454 short blocks, and many other popular build options. We’ve even got stroker engine blocks, including 383-, 408-, and 427-cubic-inch...

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ATK High Performance Chevy LS 408 Short Blocks SP26-B

Chevy LS 408 Boosted/NOS Short Block 58 Tooth +10cc Dish

Part Number: HPE-SP26-B

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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ATK High Performance Chevy LQ9 6.0L Short Blocks SP19-F

Engine Assembly, Short Block, LQ9 6.0L, Hypereutectic Flat Top Pistons, Chevy, Small Block LS, Each

Part Number: HPE-SP19-F

4.17 out of 5 stars ( 6 )

Estimated Ship Date: Today

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Ford Performance Parts 5.0L Gen 3 Aluminator Short Block Crate Engines M-6009-A50NAB

Short Block Engine, 5.0L Gen 3 Aluminator NA, Aluminum Block, Forged Pistons, Internal Balance,12.0:1 Compression, Ford, Each

Part Number: FMS-M6009A50NAB

Not Yet Reviewed

Estimated Ship Date: Today

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ATK High Performance Chevy LS 408 Short Blocks SP38

ATK High Performance Chevy LS 408 Short Block

Part Number: HPE-SP38

Not Yet Reviewed

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ATK High Performance Chrysler 408 A Stroker Short Blocks SP61

Crate Engine, Chrysler 408 A Stroker, Short Block, Internal Balance, Mopar, Magnum, Each

Part Number: HPE-SP61

4.75 out of 5 stars ( 4 )

Estimated Ship Date: Today

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ATK High Performance Chevy LQ4 6.0L Short Blocks SP19

Engine Assembly, Short Block, LQ4, Chevy, Small Block LS, 364, Each

Part Number: HPE-SP19

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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ATK High Performance Chevy 377 Stroker Short Blocks SP15NB

CHEVY 377 STROKER SHORT BLOCK

Part Number: HPE-SP15NB

Not Yet Reviewed

Estimated Ship Date: Aug 11, 2025 if ordered today

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Estimated Ship Date: Aug 11, 2025 if ordered today

ATK High Performance 1988-92 Ford 460 Short Blocks SP11

Engine Assembly, Short Block, 2-Piece Main Seal, Ford, Big Block 385, 460, Each

Part Number: HPE-SP11

4.0 out of 5 stars ( 5 )

Estimated Ship Date: Today

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BluePrint Engines GM 383 C.I.D. Stroker Short Block Plus Engines BP38318SP

Crate Engine, Shortblock Plus 383, 350 Stroker Motor, SBC, New BluePrint Block, Roller Cam, Oil Pan, Balancer

Part Number: MLL-BP38318SP

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Today

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ATK High Performance Engines Short Block Engines SP109

GM Gen III 5.3 99-07 Short Block

Part Number: HPE-SP109

Not Yet Reviewed

Estimated Ship Date: Aug 11, 2025 if ordered today

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Estimated Ship Date: Aug 11, 2025 if ordered today

ATK High Performance Chevy 383 Stroker Race Series Short Blocks SP35

Engine Assembly, Crate Engine, Short Block, 1-Piece Main Seal, Chevy, Small Block, 383, Each

Part Number: HPE-SP35

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Today

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BluePrint Engines GM 383 C.I.D. Stroker Short Block Plus Engines BP38321SP

Crate Engine, Shortblock Plus 383, 350 Stroker Motor, SBC, New BluePrint Block, Roller Cam, Forged Internals

Part Number: MLL-BP38321SP

4.0 out of 5 stars ( 4 )

Estimated Ship Date: Today

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ATK High Performance Chevy LS 408 Short Blocks SP36-B

Short Block Engine, Chevy LS 408 Short Block, Remanufactured, Assembled, Internal Balance, 9.240 in. Deck Height, Chevrolet, 6.7L, Each

Part Number: HPE-SP36-B

Not Yet Reviewed

Estimated Ship Date: Today

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ATK High Performance Chevy 377 Stroker Short Blocks SP52NB

Engine, New Short Block, 377 CI,Cast Iron, 4.0 Bore, 3.750 Stroke, Forged I Beam Rod, Forged Aluminum Flat Top Pistons, Internal Balanced, Chevy, Each

Part Number: HPE-SP52NB

Not Yet Reviewed

Estimated Ship Date: Aug 11, 2025 if ordered today

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Estimated Ship Date: Aug 11, 2025 if ordered today

ATK High Performance Chevy 632 Short Blocks SP108

Engine Assembly, Short Block, Big Block, 10.3L/632, 4.600 in. Bore, 4.750 in. Stroke, Forged Pistons, Flat Top, Chevy, Big Block Mark IV, Each

Part Number: HPE-SP108

Not Yet Reviewed

Estimated Ship Date: Jul 21, 2025 if ordered today

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Estimated Ship Date: Jul 21, 2025 if ordered today

ATK High Performance Chevy 383 Stroker Short Blocks SP53

Short Block, Chevrolet 383 Stroker, Internal/External Balanced, +5cc Flat Top Pistons, Each

Part Number: HPE-SP53

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Today

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ATK High Performance Chevy LS 408 Short Blocks SP37-G4-B

Short Block, Chevrolet LS Gen IV 408 Stroker, Internally Balanced, Nitrous/Boost, 24 Tooth Reluctor, +10cc Dish Pistons, Each

Part Number: HPE-SP37-G4-B

Not Yet Reviewed

Estimated Ship Date: Aug 11, 2025 if ordered today

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Estimated Ship Date: Aug 11, 2025 if ordered today

ATK High Performance Chevy 377 Stroker Short Blocks SP53NB

Engine, New Short Block, 377 CI,Cast Iron, 4.0 Bore, 3.750 Stroke, Forged H Beam Rod, Forged Aluminum Flat Top Pistons, Internal Balanced, Chevy, Each

Part Number: HPE-SP53NB

Not Yet Reviewed

Estimated Ship Date: Aug 11, 2025 if ordered today

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Estimated Ship Date: Aug 11, 2025 if ordered today

ATK High Performance Chevy 377 Stroker Short Blocks SP35NB

Engine, New Short Block, 377 CI,Cast Iron, 4.0 Bore, 3.750 Stroke, Forged H Beam Rod, Forged Aluminum Dish Top Pistons, Internal Balanced, Chevy, Each

Part Number: HPE-SP35NB

Not Yet Reviewed

Estimated Ship Date: Tomorrow if ordered today