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BigM GEN VII

Big M GEN VII

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Product Description

The Gen 7 8.1/8.8 liter big block was used in numerous marine and truck applications. Up until now, there have been very limited options for upgrading its performance potential.

Dart’s new Gen VII block is available with full water jackets including between the cylinder bores, or with siamesed bores to enable larger displacements. The water block is available with a 4.350” bore diameter, and the siamesed bore blocks can be bored to 4.625” diameter.

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• Standard 10.236” deck height.

• 4.250” and 4.350” bore water blocks.

• 4.250”- 4.600” bore sizes for siamese blocks.

• Provision for factory crank sensor.

• Uses Gen VI timing cover and oil pan.

• Blind head bolt holes.

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

• Clutch linkage mounts, side and front motor mounts simplify installation in any chassis.

31253354 – Iron Ductile 10.236 4.250

31253254 – Iron Ductile 10.236 4.350

31253754 – Iron Ductile 10.236 4.625

BBC GEN-7 8.1L Water Block Information Packet – B24


BBC GEN-7 8.1L Block Information Packet – B25

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