CROSS BOLT BBC 1070YW Series
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1070YW — The 1070YW series is a cross bolted, 5.0" bore space, BBC block. This block is intended for use in radical blower combinations. The 1070YW features spread .160" mains and a 1.00" high cam. This block allows the motor builder to use bores of 4.600” to 4.700”.
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5.0" Bore space
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Premium CN Billet material
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CNC machined at CN Blocks
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Includes block, caps, main studs, and sleeves (installed)
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Deck heights—9.5”, 9.8”, 10.2” and 10.7”
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Big Block Chevrolet main size
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Aluminum main caps
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All 5 main caps are cross bolted
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9/16” main studs, 1/2” side bolts
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Cam height—Plus 1.00”
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Cam size & pattern to match cylinder head
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Lifter pattern to match cylinder heads
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Lifter sizes .904” or .936”
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Priority main based oil system
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Special CN Blocks cam oil cross
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#12 AN oil inlet
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Dry sump or external wet sump only
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KB Olds oil pan pattern
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GM bell housing pattern
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Dual starter bosses
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Recommend bore to 4.600” to 4.700”
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Water cooling
OPTIONS:
Non standard deck heights
Non standard cam size
Head stud kit
Replacement sleeves
