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- H1.00"
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SKU: 19432546
1-piece rear main seal
Uses Mark IV-style front cover and oil pan mounting
CNC-machined cast-iron 4-bolt block
4.560" fully honed bore
4.600" max bore
Powder-coated Chevy orange
5 windage tray bolts installed
Tested to 800 horsepower!
This is the block used for our 572 engines
WARNING: Cancer and Reproductive Harm -