• Big M Gen V Water – Bare Iron Big Block Chevy

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    Big M Gen V Water – Bare Iron Big Block Chevy

    Engineered for applications where water between the bores is a requirement. Siamese bore versions are also available for larger bore applications.  MRK IV blocks use the 2-piece rear seal design.  These blocks are based on Dart’s Big M design, and include features like priority main oiling and 4-bolt main caps.

    • Standard 9.800” and tall 10.200” deck heights available.

    • Standard 4.250”, 4.310”, 4.500” and 4.600”.

    • Uses +.300” tall Gen VI style lifters. Modification for Gen IV style available.

    • 4-bolt main bearing caps in Ductile Iron have splayed outer bolts for extra strength.

    • Lifter valley bosses for OE style roller lifters and retainer.

    • Mechanical fuel pump boss, clutch linkage mounts, and side and front motor mounts simplify installation in any chassis.

     
    $2,383.97
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    BIG M MARK IV WATER 396 Style Block – Iron (Legal for Super Stock)

    DART Big M Gen IV Big Block Chevy
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    DART Big M Gen IV Big Block Chevy

    BIG M MARK IV WATER 396 Style Block – Iron (Legal for Super Stock)

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    BIG M MARK IV WATER 396 Style Block – Iron (Legal for Super Stock)

    Engineered for applications where water between the bores is a requirement. Siamese bore versions are also available for larger bore applications.  MRK IV blocks use the 2-piece rear seal design.  These blocks are based on Dart’s Big M design, and include features like priority main oiling and 4-bolt main caps.

    • Standard 9.800” and tall 10.200” deck heights available.

    • Standard 4.250”, 4.310”, 4.500” and 4.600”.

    • Uses +.300” tall Gen VI style lifters. Modification for Gen IV style available.

    • 4-bolt main bearing caps in Ductile Iron have splayed outer bolts for extra strength.

    • Lifter valley bosses for OE style roller lifters and retainer.

    • Mechanical fuel pump boss, clutch linkage mounts, and side and front motor mounts simplify installation in any chassis.

     
    $2,880.33
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    DART Big M Mark IV Big Block Chevy Bare Iron Block

    DART Big M Gen IV Big Block Chevy
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    DART Big M Gen IV Big Block Chevy

    DART Big M Mark IV Big Block Chevy Bare Iron Block

    0 out of 5

    DART Big M Mark IV Big Block Chevy Bare Iron Block

    Engineered for applications where water between the bores is a requirement. Siamese bore versions are also available for larger bore applications.  MRK IV blocks use the 2-piece rear seal design.  These blocks are based on Dart’s Big M design, and include features like priority main oiling and 4-bolt main caps.

    • Standard 9.800” and tall 10.200” deck heights available.

    • Standard 4.250”, 4.310”, 4.500” and 4.600”.

    • Uses +.300” tall Gen VI style lifters. Modification for Gen IV style available.

    • 4-bolt main bearing caps in Ductile Iron have splayed outer bolts for extra strength.

    • Lifter valley bosses for OE style roller lifters and retainer.

    • Mechanical fuel pump boss, clutch linkage mounts, and side and front motor mounts simplify installation in any chassis.

     
    $2,383.97