CHEVROLET ATK High Performance Engines Parts and Accessories

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

Part Number: HPE-SP38-G4-B

Not Yet Reviewed

Estimated Ship Date: Apr 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: Apr 13, 2026 if ordered today

• Core Charge $370.00
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Short Block, Chevrolet LS Gen IV 408 Stroker, Internally Balanced, 24 Tooth Reluctor, +4cc Flat Top Pistons, Each

Part Number: HPE-SP39-G4

Not Yet Reviewed

Estimated Ship Date: Apr 13, 2026 if ordered today

• Core Charge $410.00
• Free Shipping
• Special Order

Short Block, Chevrolet LS Gen IV 408 Stroker, Internally Balanced, Nitrous/Boost, 24 Tooth Reluctor, +4cc Flat Top Pistons, Each

Part Number: HPE-SP39-G4-B

Not Yet Reviewed

Estimated Ship Date: Apr 13, 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: Apr 13, 2026 if ordered today

• Core Charge $410.00
• Free Shipping
• Special Order

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

Part Number: HPE-SP40-G4-B

Not Yet Reviewed

Estimated Ship Date: Apr 13, 2026 if ordered today

• Core Charge $410.00
• Free Shipping
• Special Order

ATK High Performance Chevy LS3 415 Short Block

Part Number: HPE-SP67

Not Yet Reviewed

Estimated Ship Date: Apr 13, 2026 if ordered today

• Free Shipping
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ATK High Performance Chevy LS3 415 Short Block

Part Number: HPE-SP68

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Estimated Ship Date: Apr 13, 2026 if ordered today

• Free Shipping
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ATK High Performance Chevy LS3 415 Short Block

Part Number: HPE-SP69

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ATK High Performance Chevy LS3 415 Short Block

Part Number: HPE-SP70

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Estimated Ship Date: Apr 13, 2026 if ordered today

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ATK High Performance Chevy LS3 415 Short Block

Part Number: HPE-SP71

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Estimated Ship Date: Apr 13, 2026 if ordered today

• Free Shipping
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SHORT BLOCK, LS3 415CI Boost Shortblock 58T

Part Number: HPE-SP71-B

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ATK High Performance Chevy LS3 415 Short Block

Part Number: HPE-SP72

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Estimated Ship Date: Apr 13, 2026 if ordered today

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ATK High Performance Chevy LS3 415 Short Block

Part Number: HPE-SP74

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Estimated Ship Date: Apr 13, 2026 if ordered today

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

Part Number: HPE-SP77

Not Yet Reviewed

Estimated Ship Date: Apr 13, 2026 if ordered today

• Core Charge $285.00
• Free Shipping
• Special Order

Chevy LM7 383CI Short Block +32cc Dished Pistons 24 Tooth

Part Number: HPE-SP79

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Estimated Ship Date: Apr 13, 2026 if ordered today

• Core Charge $285.00
• Free Shipping
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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: Apr 6, 2026 if ordered today

• Core Charge $600.00
• Free Shipping
• Special Order

Crate Engine, GM 496 Stroker 600 HP Stage 3 Long Block, Assembled, Hydraulic Roller Tappet, Internal Balance, Aluminum Heads, Chevy, 7.4L, 8.1L, Each

Part Number: HPE-HP631PC

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Estimated Ship Date: Apr 6, 2026 if ordered today

• Core Charge $600.00
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• Special Order

Crate Engines, GM 489 Stroker 565 HP Stage 3 Long Block, 8.0L/489, Assembled, Aluminum Heads, Carbureted, Chevrolet, 7.4L Big Block Gen V, Each

Part Number: HPE-HP411PC

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Estimated Ship Date: Apr 6, 2026 if ordered today

• Core Charge $600.00
• Free Shipping
• Special Order

Crate Engines, GM 489 Stroker 565 HP Stage 1 Long Block, 8.0L/489, Assembled, Internal Balance, Aluminum Heads, Chevrolet, 7.4L Big Block Gen V, Each

Part Number: HPE-HP411P

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Estimated Ship Date: Apr 6, 2026 if ordered today

• Core Charge $600.00
• Free Shipping
• Special Order

Crate Engines, GM 365 LQ4 550 HP Stage 1 Long Block, 6.0L/364, Assembled, Internal Balance, Aluminum Cylinder Heads, Chevrolet, Small Block LS, Each

Part Number: HPE-LQ4-LB-1

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Estimated Ship Date: Apr 13, 2026 if ordered today

• Core Charge $560.00
• Free Shipping
• Special Order

Crate Engines, GM 365 LQ9 550 HP Stage 1 Long Block, 6.0L/364, Assembled, Internal Balance, Aluminum Cylinder Heads, Chevrolet, Small Block LS, Each

Part Number: HPE-LQ9-LB-1

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Estimated Ship Date: Apr 13, 2026 if ordered today

• Core Charge $560.00
• Free Shipping
• Special Order

CRATE ENGINE, Chev 383 415HP Black

Part Number: HPE-HP94CBLK

Not Yet Reviewed

• Core Charge $510.00
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CRATE ENGINE, Chev 383 415HP Polished

Part Number: HPE-HP94CPOL

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• Core Charge $510.00
• Free Shipping
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Crate Engines, GM LM7/LS1 347CI 500 HP Stage 1 Long Block, 5.7L/347, Assembled, Internal Balance, Aluminum Heads, Chevrolet, Small Block LS, Each

Part Number: HPE-LM7-LB-2

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Estimated Ship Date: Apr 20, 2026 if ordered today

• Core Charge $285.00
• Free Shipping
• Special Order