CHEVROLET Chevy big block Mark IV Engines & Components

Cylinder Heads, Oval Port Magnum, Aluminum, Assembled, 112cc Combustion Chamber, 265cc Intake, Chevy, Pair

Part Number: AFR-3610-1

4.0 out of 5 stars ( 8 )

Estimated Ship Date: Dec 18, 2025 if ordered today

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Cylinder Heads, CNC Chambers, Aluminum, Assembled, 121cc Chamber, 345cc Intake, Chevy, Big Block, Pair

Part Number: AFR-2110-1

3.67 out of 5 stars ( 3 )

Estimated Ship Date: Today

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Cylinder Heads, Magnum Competition, Aluminum, Assembled, 121cc Chamber, 385cc Intake, Chevy, Pair

Part Number: AFR-2020-TI

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Engine Block, Cast Iron, Nodular Iron Splayed 4-Bolt Mains, 4.495 in. Bore, 2-Piece Seal, 9.800 in. Deck, Chevy, Big Block, Each

Part Number: WRL-091101

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Estimated Ship Date: Jan 8, 2026 if ordered today

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Engine Block, Cast Iron, 4-Bolt Mains, 4.245 in. Diameter Bore, 2-Piece Rear Main Seal, Chevy, Big Block, Each

Part Number: WRL-095000

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Jan 7, 2026 if ordered today

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Engine Block, Cast Iron, Nodular Iron Splayed 4-Bolt Mains, 4.495 in. Bore, 2-Piece Seal, 10.200 in. Deck, Chevy, Big Block, Each

Part Number: WRL-091111

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Estimated Ship Date: Jan 9, 2026 if ordered today

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Accessory Drive System, Serpentine, 6-groove, Polished Finished, Power Steering, Air Conditioning, Chevy, Big Block, Kit

Part Number: AAY-FDS-BBC-101

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Estimated Ship Date: Dec 22, 2025 if ordered today

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Cylinder Heads, Oval Port, Assembled, Aluminum, 112cc Combustion Chamber, 290cc Intake, Chevy, Big Block, Pair

Part Number: AFR-3640

4.67 out of 5 stars ( 3 )

Estimated Ship Date: Today

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Cylinder Heads, CNC Blended Bowls, Aluminum, Assembled, 117cc Chamber, 325cc Intake, Chevy, Big Block, Pair

Part Number: AFR-2101

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Cylinder Heads, Magnum, Aluminum, Assembled, 113cc Chamber, 300cc Intake, Chevy, Pair

Part Number: AFR-3670

5.0 out of 5 stars ( 1 )

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Cylinder Heads, Magnum, Aluminum, Assembled, 113cc Chamber, 300cc Intake, Chevy, Pair

Part Number: AFR-3680

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Jan 19, 2026 if ordered today

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Engines, Bare Block, Cast Iron, Merlin IV BBC, 10.200 in. Deck, 4.595 in. Bore, Splayed Billet Caps, Standard Cam Bearings and Lifters, Each

Part Number: WRL-095112

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Jan 7, 2026 if ordered today

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Cylinder Heads, Aluminum, Oval Port, Assembled, CNC, 290cc Intake Runner, Chevy, Big Block, Pair

Part Number: AFR-3650

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Jan 14, 2026 if ordered today

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Cylinder Heads, Race, Aluminum, Assembled, 117cc Chamber, 305cc Intake Runner, Chevy, Big Block, Pair

Part Number: AFR-2100

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Estimated Ship Date: Jan 14, 2026 if ordered today

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Accessory Drive System, Serpentine, 6-groove, Polished Finished, Power Steering, Air Conditioning, Chevy, Big Block, Kit

Part Number: AAY-FDS-BBC-151

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Cylinder Heads, 377cc Magnum BBC Competition Racing Heads, Aluminum, Assembled, 122cc Chamber, Chevrolet, Big Block, Pair

Part Number: AFR-2015-TI

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Estimated Ship Date: Jan 14, 2026 if ordered today

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Cylinder Heads, Magnum, Aluminum, Assembled, 121cc Chamber, 357cc Intake, Chevy, Pair

Part Number: AFR-2010-TI

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Estimated Ship Date: Jan 14, 2026 if ordered today

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Cylinder Heads, Competition Porting, Aluminum, Assembled, 121cc Chamber, 335cc Intake, Chevy, Big Block, Pair

Part Number: AFR-2001

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Jan 14, 2026 if ordered today

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Engines, Bare Block, Cast Iron, Merlin IV BBC, 9.800 in. Deck, 4.595 in. Bore, Splayed Billet Caps, Standard Cam Bearings and Lifter bores, Each

Part Number: WRL-095012

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Estimated Ship Date: Jan 9, 2026 if ordered today

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Engine Block, Cast Iron, 4-Bolt Mains, 4.595 in. Diameter Bore, 10.250 in. Deck, Nodular Iron Main Cap, 2-Piece Rear Main Seal, Chevy, Big Block, Each

Part Number: WRL-091117

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Estimated Ship Date: Dec 29, 2025 if ordered today

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Engine Block, Cast Iron, Nodular Iron Splayed 4-Bolt Mains, 4.595 in. Bore, 2-Piece Seal, 9.800 in. Deck, Chevy, Big Block, Each

Part Number: WRL-091102

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Estimated Ship Date: Jan 8, 2026 if ordered today

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Engine Block, Cast Iron, Nodular Iron Splayed 4-Bolt Mains, 4.595 in. Bore, 2-Piece Seal, 10.200 in. Deck, Chevy, Big Block, Each

Part Number: WRL-091112

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Estimated Ship Date: Jan 7, 2026 if ordered today

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Cylinder Heads, Aluminum, Oval Port, Assembled, CNC, As Cast, 265cc Intake Runner, Chevy, Big Block, Pair

Part Number: AFR-3620-1

5.0 out of 5 stars ( 1 )

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Cylinder Heads, Oval Port Magnum, Aluminum, Assembled, 109cc Chamber, 265cc Intake, Chevy, Pair

Part Number: AFR-3620

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Estimated Ship Date: Jan 14, 2026 if ordered today

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Accessory Drive System, Serpentine, 6-groove, Black Anodized Finished, Power Steering, Air Conditioning, Chevy, Big Block, Kit

Part Number: AAY-FDS-BBC-201

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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