CHEVROLET Chevy small block Gen III/IV (LS-based engines) Engines & Components

Replacement Piston and Components: If not in stock, order MUST be placed to trigger singles. Average ETA of 3 business days if kits are in stock

Part Number: SUM-299S274040-2

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Estimated Ship Date: Today

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Engine Block, Pro LS, Bare, Cast Iron, 6-bolt Main Bolt Style, 9.240 in. Std Deck, 4 Head Bolt, 4.065 in. Bore, GenIII/IV LS Chevrolet, 6.0/6.2, Each

Part Number: SUM-150215

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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: Jan 27, 2026 if ordered today

• Core Charge $410.00
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Cylinder Head, LSX-SC, As-Cast, 70cc Combustion Chamber, Bare, Aluminum, Natural, Chevy, Each

Part Number: NAL-19417408

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Estimated Ship Date: Mar 9, 2026 if ordered today

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LT1 CAM and Head Kit

Part Number: NAL-19333525

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Estimated Ship Date: Mar 9, 2026 if ordered today

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Chevy LS 408 Boosted/NOS Short Block 58 Tooth -18cc Dish

Part Number: HPE-SP31-B

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Estimated Ship Date: Feb 6, 2026 if ordered today

• Core Charge $410.00
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Short Block, Chevrolet LS Gen IV 408 Stroker, Internally Balanced, 24 Tooth Reluctor, +10cc Dish Pistons, Each

Part Number: HPE-SP37-G4

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Estimated Ship Date: Feb 6, 2026 if ordered today

• Core Charge $410.00
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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: Feb 6, 2026 if ordered today

• Core Charge $285.00
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Pulleys, Pro-Track Serpentine Conversion, Billet Aluminum, Polished, Clear Powdercoated, Air Conditioning, No Power Steering, Chevrolet, LS, Kit

Part Number: MCH-20030

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Estimated Ship Date: Dec 22, 2025 if ordered today

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Chevy LS 408 Boosted/NOS Short Block 24 Tooth -10cc Dish

Part Number: HPE-SP37-B

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Estimated Ship Date: Feb 2, 2026 if ordered today

• Core Charge $410.00
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Accessory Drive Systems, LS Mid-Mount, Serpentine, Alternator, A/C, Water Pump, Power Steering, SFI Damper, Polished Finish, Chevy, 4.8-6.2, Kit

Part Number: HLY-20-180P

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Estimated Ship Date: Dec 1, 2025 if ordered today

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Accessory Drive Systems, LS Mid-mount, Serpentine, Alternator, Water Pump, Power Steering, SFI Damper, Hardware, Natural Finish, Chevy, 4.8-7.0L, Kit

Part Number: HLY-20-181

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Estimated Ship Date: Dec 1, 2025 if ordered today

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Accessory Drive Systems, LS Mid-mount, Serpentine, Alternator, Water Pump, Clockwise, Tensioner, SFI Damper, Black Finish, Chevy, 4.8-7.0L, Kit

Part Number: HLY-20-182BK

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Estimated Ship Date: Dec 1, 2025 if ordered today

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Accessory Drive Systems, LS Mid-mount, Serpentine, Alternator, Water Pump, Counterclockwise, Pulleys, 6-groove, Natural Finish, Chevy, 4.8-7.0L, Kit

Part Number: HLY-20-187

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Estimated Ship Date: Dec 1, 2025 if ordered today

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Pulley Sets, Serpentine, LS Engine Swap Accessory Drive System, Sanden 508 A/C Only, Polished, Chevy, GMC, V8, Kit

Part Number: HLY-20-137P

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Estimated Ship Date: Dec 1, 2025 if ordered today

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Accessory Drive Systems, LS Mid-Mount, Serpentine, Alternator, Power Steering, Water Pump, AC, Pulleys, 6-groove, Black Finish, Chevy, 4.8-7.0L, Kit

Part Number: HLY-20-190BK

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Estimated Ship Date: Dec 1, 2025 if ordered today

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Pulley Set, Pro-Track, Serpentine, Aluminum, Air Conditioning, Black Powdercoat, Chevrolet, LS, Kit

Part Number: MCH-20030-08

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Estimated Ship Date: Dec 22, 2025 if ordered today

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Crankshaft, 1-Piece Seal, Internal Balance, Forged 4340 Steel, 3.622 in. Stroke, Chevy, LS9, Each

Part Number: ESP-442536226100

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Estimated Ship Date: Dec 15, 2025 if ordered today

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Crankshaft, 1-Piece Seal, Internal Balance, Forged 4340 Steel, 4.000 in. Stroke, Chevy, LS9, Each

Part Number: ESP-442540006100

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Estimated Ship Date: Dec 15, 2025 if ordered today

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Crankshaft, 1-Piece Seal, Internal Balance, Forged 4340 Steel, 4.125 in. Stroke, Chevy, LS9, Each

Part Number: ESP-442541256100

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Estimated Ship Date: Dec 15, 2025 if ordered today

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Crankshaft, 1-Piece Seal, Internal Balance, Forged 4340 Steel, 3.622 in. Stroke, Chevy, LS9, Each

Part Number: ESP-442636226100

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Estimated Ship Date: Dec 15, 2025 if ordered today

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Crankshaft, 1-Piece Seal, Internal Balance, Forged 4340 Steel, 4.000 in. Stroke, Chevy, LS9, Each

Part Number: ESP-442640006100

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Estimated Ship Date: Dec 15, 2025 if ordered today

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Crankshaft, 1-Piece Seal, Internal Balance, Forged 4340 Steel, 4.125 in. Stroke, Chevy, LS9, Each

Part Number: ESP-442641256100

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Estimated Ship Date: Dec 15, 2025 if ordered today

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Pulley/Bracket Set, Serpentine, Aluminum, Chrome, A/C, Power Steering, GM, LS Series, Wide Kit

Part Number: MCH-20060-06

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Estimated Ship Date: Dec 22, 2025 if ordered today

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Pulley/Bracket Set, Serpentine, Aluminum, Black Powdercoated, A/C, Power Steering, GM, LS Series, Wide Kit

Part Number: MCH-20060-08

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Estimated Ship Date: Dec 22, 2025 if ordered today

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