ATK High Performance Engines Parts and Accessories

ATK High Performance Chevy LS 408 Short Block

Part Number: HPE-SP39

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Estimated Ship Date: Nov 21, 2025 if ordered today

• Core Charge $370.00
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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

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Estimated Ship Date: Nov 21, 2025 if ordered today

• Core Charge $410.00
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Short Block, Chevrolet LS Gen IV 408 Stroker, Internally Balanced, 24 Tooth Reluctor, +29cc Dish Pistons, Each

Part Number: HPE-SP40-G4

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Estimated Ship Date: Nov 21, 2025 if ordered today

• Core Charge $410.00
• Free Shipping
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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

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Estimated Ship Date: Nov 21, 2025 if ordered today

• Core Charge $410.00
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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

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Estimated Ship Date: Nov 21, 2025 if ordered today

• Core Charge $600.00
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Engine Assembly, Short Block, 2-Piece Main Seal, Chevy, Big Block, 540, Each

Part Number: HPE-SP45

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

Part Number: HPE-SP57

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Estimated Ship Date: Nov 21, 2025 if ordered today

• Core Charge $370.00
• Free Shipping
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ATK High Performance Chevy LS3 415 Short Block

Part Number: HPE-SP67

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Estimated Ship Date: Nov 21, 2025 if ordered today

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ATK High Performance Chevy LS3 415 Short Block

Part Number: HPE-SP68

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Estimated Ship Date: Nov 21, 2025 if ordered today

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ATK High Performance Chevy LS3 415 Short Block

Part Number: HPE-SP70

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Estimated Ship Date: Nov 21, 2025 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: Nov 21, 2025 if ordered today

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ATK High Performance Chevy LS3 415 Short Block

Part Number: HPE-SP72

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Estimated Ship Date: Nov 21, 2025 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: Nov 21, 2025 if ordered today

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

Part Number: HPE-SP76

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Estimated Ship Date: Nov 21, 2025 if ordered today

• Core Charge $285.00
• Free Shipping
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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

• Core Charge $285.00
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Chevy LM7 383CI Short Block +8cc Dished Pistons 24 Tooth

Part Number: HPE-SP77

Not Yet Reviewed

Estimated Ship Date: Nov 21, 2025 if ordered today

• Core Charge $285.00
• Free Shipping
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Chevy LM7 383CI Short Block +32cc Dished Pistons 24 Tooth

Part Number: HPE-SP79

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Estimated Ship Date: Nov 21, 2025 if ordered today

• Core Charge $285.00
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Short Block, Chevrolet LS Gen IV 364, Internally Balanced, 24 Tooth Reluctor, +3.2cc Flat Top Pistons, Each

Part Number: HPE-SP93-G4

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Estimated Ship Date: Nov 21, 2025 if ordered today

• Core Charge $410.00
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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: Nov 21, 2025 if ordered today

• Core Charge $410.00
• Free Shipping
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Engine Assembly, Short Block, LS3 364, Forged Flat Top Pistons, Chevy, Small Block LS, Each

Part Number: HPE-SP95-G4

Not Yet Reviewed

Estimated Ship Date: Nov 21, 2025 if ordered today

• Core Charge $410.00
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Short Block, Chevrolet LS Gen IV 364, Internally Balanced, 58 Tooth Reluctor, +11cc Dish Pistons, Each

Part Number: HPE-SP96-G4

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Estimated Ship Date: Nov 21, 2025 if ordered today

• Core Charge $410.00
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Short Block, Chrysler Gen III 392, Internally Balanced, +2cc Flat Pistons, Each

Part Number: HPE-SP97

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Estimated Ship Date: Nov 21, 2025 if ordered today

• Core Charge $460.00
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Engines, Dart Short Block, 427 C.I.,, Cast Iron, 4.125 Bore, 4.00 Stroke, Flat Top Forged Aluminum Pistons, H Beam Connecting Rod, LS, Chevy, Each

Part Number: HPE-SPE4271500

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Estimated Ship Date: Nov 21, 2025 if ordered today

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Engines, Bare Block, Cast Iron, OEM Style, Standard Deck, 3.927 in. Bore Shipped, 2-Bolt Mains, Mopar, Gen III Hemi, Each

Part Number: HPE-220A

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Estimated Ship Date: Nov 21, 2025 if ordered today

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Cylinder Head, Vortec, Cast Iron, 64cc Chamber, 170cc Runner, 1.940 in. Intake Valve, 1.500 in. Exhaust Valve, 0.525 in. Max Lift, Chevy, Each

Part Number: HPE-2CH4HP1

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Estimated Ship Date: Nov 21, 2025 if ordered today

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