ATK High Performance Engines Engines & Components

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: Feb 13, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Chevy LM7 383CI Short Block +3cc Flat Top Pistons 24 Tooth

Part Number: HPE-SP80

Not Yet Reviewed

Estimated Ship Date: Feb 13, 2026 if ordered today

• Core Charge $285.00
• Free Shipping
• Special Order

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: Feb 2, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Short Block, Chevrolet LS Gen IV 364, Internally Balanced, 24 Tooth Reluctor, +3.2cc Flat Top Pistons, Each

Part Number: HPE-SP93-G4

Not Yet Reviewed

Estimated Ship Date: Jan 27, 2026 if ordered today

• Core Charge $410.00
• Free Shipping
• Special Order

Engine Assembly, Short Block, LM7, 5.7/347, 3.903 in. Bore, 3.622 in. Stroke, Forged Dished Pistons, I-Beam, Chevy, LS, Each

Part Number: HPE-SP76-B

Not Yet Reviewed

Estimated Ship Date: Feb 13, 2026 if ordered today

• Core Charge $285.00
• Free Shipping
• Special Order

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: Feb 13, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

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

Part Number: HPE-SP37-G4

Not Yet Reviewed

Estimated Ship Date: Feb 13, 2026 if ordered today

• Core Charge $410.00
• Drop Ship
• Free Shipping
• Special Order

Engine Assembly, Short Block, Stroker, 1-Piece Main Seal, Mopar, Small Block Magnum, 408, Each

Part Number: HPE-SP57

Not Yet Reviewed

Estimated Ship Date: Feb 13, 2026 if ordered today

• Core Charge $370.00
• Drop Ship
• Free Shipping
• Special Order

Chevy LM-7/LS 347CI Short Block +11cc Dished Pistons 24 Tooth

Part Number: HPE-SP76

Not Yet Reviewed

Estimated Ship Date: Feb 13, 2026 if ordered today

• Core Charge $285.00
• Drop Ship
• Free Shipping
• Special Order

Short Block, Chrysler Gen III 392, Internally Balanced, +2cc Flat Pistons, Each

Part Number: HPE-SP97

Not Yet Reviewed

Estimated Ship Date: Feb 13, 2026 if ordered today

• Core Charge $460.00
• Drop Ship
• Free Shipping
• Special Order

Short Block, Chevrolet LS Gen IV 364, Internally Balanced, 24 Tooth Reluctor, +11cc Dish Pistons, Each

Part Number: HPE-SP94-G4

Not Yet Reviewed

Estimated Ship Date: Jan 12, 2026 if ordered today

• Core Charge $410.00
• Free Shipping
• Special Order

Short Block, Chevrolet LS Gen IV 408 Stroker, Internally Balanced, 58 Tooth Reluctor, +18cc Dish Pistons, Each

Part Number: HPE-SP31-G4

Not Yet Reviewed

Estimated Ship Date: Jan 12, 2026 if ordered today

• Core Charge $410.00
• Free Shipping
• Special Order

Short Block, Chevrolet LS Gen IV 408 Stroker, Internally Balanced, 58 Tooth Reluctor, +29cc Dish Pistons, Each

Part Number: HPE-SP36-G4

Not Yet Reviewed

Estimated Ship Date: Jan 12, 2026 if ordered today

• Core Charge $410.00
• Free Shipping
• Special Order

Short Block, Chevrolet LS Gen IV 408 Stroker, Internally Balanced, 24 Tooth Reluctor, +18cc Dish Pistons, Each

Part Number: HPE-SP38-G4

Not Yet Reviewed

Estimated Ship Date: Jan 12, 2026 if ordered today

• Core Charge $410.00
• Free Shipping
• Special Order

Short Block, Chevrolet LS Gen IV 408 Stroker, Internally Balanced, 24 Tooth Reluctor, +29cc Dish Pistons, Each

Part Number: HPE-SP40-G4

Not Yet Reviewed

Estimated Ship Date: Jan 12, 2026 if ordered today

• Core Charge $410.00
• Free Shipping
• Special Order

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

Part Number: HPE-HP33

Not Yet Reviewed

Estimated Ship Date: Jan 22, 2026 if ordered today

• Core Charge $510.00
• Free Shipping
• Special Order

CHEV 383CI 415HP-STREET TBI Cam

Part Number: HPE-HP94-TBI

Not Yet Reviewed

• Core Charge $510.00
• Free Shipping
• Special Order

Crate Engine, GM 383 Stroker, Marine, 380 HP, Long Block, External/Internal Engine Balance, Aluminum Heads, Each

Part Number: HPE-HP96

Not Yet Reviewed

Estimated Ship Date: Jan 22, 2026 if ordered today

• Core Charge $510.00
• Free Shipping
• Special Order

CRATE ENGINE

Part Number: HPE-HPLH6N

Not Yet Reviewed

• Core Charge $560.00
• Free Shipping
• Special Order

Short Block, Chevrolet LS Gen IV 408 Stroker, Internally Balanced, 58 Tooth Reluctor, +10cc Dish Pistons, Each

Part Number: HPE-SP26-G4

Not Yet Reviewed

Estimated Ship Date: Jan 19, 2026 if ordered today

• Core Charge $410.00
• Free Shipping
• Special Order

Short Block, Chrysler Gen III 392, Internally Balanced, Nitrous/Boost, +2cc Flat Pistons, Each

Part Number: HPE-SP97-B

Not Yet Reviewed

Estimated Ship Date: Jan 26, 2026 if ordered today

• Core Charge $460.00
• Free Shipping
• Special Order

ATK High Performance Chevy LS 408 Short Block

Part Number: HPE-SP36

Not Yet Reviewed

Estimated Ship Date: Feb 13, 2026 if ordered today

• Core Charge $410.00
• Free Shipping
• Special Order

ATK High Performance Chevy LS 408 Short Block

Part Number: HPE-SP39

Not Yet Reviewed

Estimated Ship Date: Feb 13, 2026 if ordered today

• Core Charge $370.00
• Free Shipping
• Special Order

Short Block, Chevrolet Big Block Gen V 489/496 Stroker, Internally Balanced, Forged Crankshaft, +20cc Dome Pistons, Each

Part Number: HPE-SP41-1P

Not Yet Reviewed

Estimated Ship Date: Feb 13, 2026 if ordered today

• Core Charge $600.00
• Free Shipping
• Special Order

Chevy LM7 383CI Short Block +8cc Dished Pistons 24 Tooth

Part Number: HPE-SP77

Not Yet Reviewed

Estimated Ship Date: Feb 13, 2026 if ordered today

• Core Charge $285.00
• Free Shipping
• Special Order