The Dart aluminum small-block is light, strong, and affordable. With displacements up to 450 cubic inches, the Dart aluminum block is ideal for sprint cars, modifieds, late-model stock cars, dragsters, and unlimited competition classes. With pressed-in dry sleeves, upgraded oiling and steel 4-bolt main caps, Dart's aluminum blocks have the features that Ford racers need to build powerful and reliable engines.

• Premium alloy: Dart aluminum blocks are cast from virgin 355-T6 aerospace alloy for superior strength and integrity
• Siamesed cylinders: Standard 4.00” or 4.125” cylinders can be safely bored to 4.165” diameter. 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 detonation, extend engine life and produce consistent cylinder temperatures
• Four deck heights: 8.200” (302), 8.700” (stroker 302), 9.200” (351C) and 9.500” (351W) allow displacements up to 450ci.
• Steel four-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: 302 (2.249”) or 351C (2.749”) allow choice of small or large journal crankshaft
• 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 system 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 gasket leaks
• Standard camshaft and camshaft drive can be used
• Precision CNC machining ensures consistent high quality and eliminates expensive “blueprinting”

Comp blocks have billet steel 4-bolt main caps, all 5. Includes coated cam bearings, freeze plugs and dowels. Machined with front and rear external oil feed, crossover and restrictor provision.