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, Darts 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 4.00î or 4.125î cylinders can be safely bored to 4.165î 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: 8.200î (302), 8.700î (stroker 302), 9.200î (351C) and 9.500î (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 (2.249î) or 351C (2.749î) 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 ñblueprintingî 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.
Posted on: Tue, 01 Apr 2014 22:00:52 +0000
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