http://www.jegs.com/
For Dart blocks
http://www.flatlanderracing.com/index.html
www.summitracing.com
Dart block from Flatlender...
Siamesed Cylinders: Standard 4.00" or 4.125" cylinders can be safely bored to 4.185" diameter
Scalloped Water Jackets increase coolant flow around cylinder barrels
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 Caps are standard. Three center caps have splayed outer bolts; rear caps uses standard one-piece seal.
Two Main Bearing Diameters: 302(2.249") or 351C(2.749")
Stock Components: Provisions for production motor mounts, accessory drives, smog pumps, starter brackets, oil pans and pumps
Upgraded Oiling System: Stock-type oiling system plus low-restriction "priority main" oiling system with external oil pump feeds
Dual Crossovers allow oil flow to be metered with restrictors
Reinforced Head Bolt Bosses are blind tapped. Extra thick decks prevent gasket leaks.
Precision CNC Machining ensures quality and eliminates expensive "blueprinting"
Standard Camshaft and camshaft drive can be used. Lifter valley has bosses for production hydraulic roller lifters.
Part # Deck Height Bore Main Size Price
31384175 8.200 4.000 302 main $1989
31384185 8.700 4.000 302 main $2129
31384195 9.200 4.000 302 main $2239
31384275 8.200 4.125 302 main $1989
31384285 8.700 4.125 302 main $2129
31384295 9.200 4.125 302 main $2239
31385135 9.500 4.000 Cleveland main $1989
31385195 9.200 4.000 Cleveland main $2239
31385235 9.500 4.125 Cleveland main $1989
31385295 9.200 4.125 Cleveland main $2129
Note: All blocks can be bored to 4.185"and the max stroke of 3.750" without clearancing the block.