Dart is committed to producing the best engine components available, including the Dart Big M Mark IV big block Chevy full water cast iron bare blocks--engineered for applications where water between the bores is a requirement. Siamese bore versions are also available for larger bore applications.

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Dart Engine Block, Big M, 4-Bolt Mains, 2-Piece Rear Seal, BBC 9.800 4.600 2.125 Cam, Each

Dart Engine Block, Big M, 4-Bolt Mains, 2-Piece Rear Seal, BBC 9.800 4.600 2.125 Cam, Each

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Dart Engine Block, Big M Race Series Chevorlet Big Aluminum, 4.600 In. Bore, 10.200 In. Deck, Each

Dart Engine Block, Big M Race Series Chevorlet Big Aluminum, 4.600 In. Bore, 10.200 In. Deck, Each

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Dart Engine Block, Big M Race Series Chevorlet Big Aluminum, 4.500 In. Bore, 10.200 In. Deck, Each

Dart Engine Block, Big M Race Series Chevorlet Big Aluminum, 4.500 In. Bore, 10.200 In. Deck, Each

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DART Engine Block, Cast Iron, 4-Bolt Mains, 4.600 in. Diameter Bore, 2-Piece Rear Main Seal, For Chevrolet, Big Block, Each

DART Engine Block, Cast Iron, 4-Bolt Mains, 4.600 in. Diameter Bore, 2-Piece Rear Main Seal, For Chevrolet, Big Block, Each

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DART Engine Block, Cast Iron, 4-Bolt Mains, 4.500 in. Diameter Bore, 2-Piece Rear Main Seal, For Chevrolet, Big Block, Each

DART Engine Block, Cast Iron, 4-Bolt Mains, 4.500 in. Diameter Bore, 2-Piece Rear Main Seal, For Chevrolet, Big Block, Each

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World ENGINE BLOCK Merlin III BB For Chevrolet, 10.200' x 4.595', standard cam, nodular iron splayed main caps

World ENGINE BLOCK Merlin III BB For Chevrolet, 10.200' x 4.595', standard cam, nodular iron splayed main caps

$4,104.31