Dart puts Ford racers in front with their Race Series small block Ford aluminum bare blocks designed just for Fords! The highlights and features of Race Series blocks include: * Cast 355-T6 aerospace alloy blocks for superior strength and integrity * Siamesed cylinders with standard 4.00 in. or 4.125 in. cylinder bores, which can be safely bored to 4.165 in. diameters * Ductile iron sleeves and extra-thick walls prevent cracking and produce excellent ring seal * Scalloped water jackets increase coolant flow around cylinder barrels to prevent detonations, extend engine life, and produce consistent cylinder temperatures * Four deck heights are available * Steel 4-bolt main bearing caps are standard. Three center caps have splayed outer bolts for maximum strength; rear cap uses standard one-piece seal * Two main bearing diameters of 2.249 in. or 2.749 in. allow choice of small or large journal crankshaft * Stock components make Dart blocks a direct replacement for most production small blocks. * Provisions for stock motor mounts, accessory drives, smog pumps, starter brackets, oil pans, and pumps * Upgraded oiling system has a complete stock-type system, plus a low-restriction priority main oiling with front and rear external oil pump feeds * Dual crossovers allow oil flow to be metered with restrictors for roller lifter cams and/or roller rocker arms to reduce oil flow and windage * Reinforced head bolt bosses are blind-tapped to prevent leaks and produce accurate torque readings * Extra-thick decks prevent head gaskets leaks * Standard camshafts and camshaft drives can be used * Precision CNC machining ensures consistently high quality and eliminates expensive "blueprinting"

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