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Dart Iron Block
These blocks give you all the features you need to build powerful and durable engines at affordable prices. Cast from high nickel iron for superior strength and features Siamese cylinders with 4.000" or 4.125" standard bore sizes and can safely be bored to 4.165". Cylinder walls are a minimum of .230" thick at 4.165" bore. Machined using precision digital CNC equipment and is virtually ready to assemble right out of the box after a final cylinder hone. Decks are parallel within .002", liter bores, cam and main tunnels are finished. Designed for compatibility with stock components, so no costly special parts are required.
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