Perfect for Nostalgia Drag Racing or Oval Track Spec ClassesFor competition applications where superchargers, turbos, nitrous or ultra high compression results in extreme combustion pressures, World Products offers Motown Race Blocks. The most significant difference between the race block and its standard sibling is the use of splayed billet steel 4-bolt main caps that distribute load over a larger area. Other features include reinforced main webs, bulkheads, and substantial deck and walls.
SPECIFICATIONS
Material: Cast ironDeck Height: 9.025'' (standard Chevy)Deck Thickness: .600'' minimumCam Bearings: Standard Chevy small block setMain Bearings: Standard ChevyCamshaft Location: StockLifter Bores: Indexed (stock .843'' bore)Bore: 3.990'' (hone to 4.000'') or 4.115'' (hone to 4.125'')Maximum Bore: 4.200''Cylinder Wall Thickness: .250'' @ 4.200'' boreWater Jackets: Expanded for better coolingLubrication: Priority main oiling systemOil System Features: Integral boss for front feed, rear scavenge boss, wet sump pump provisionFiltration: Integral mount for spin-on filterOil Pan Rails: Solid (stock width)Crank Clearance: 4.000'' stroke (with H-Beam steel connecting rods)Main Caps: Splayed billet steel 4-bolt (1/2'' bolts inside and 7/16'' studs outside)Fuel Pump Location: OE mountStarter Mount Location: OE mountMotor Mounts: Front and sideCylinder Head Holes: Blind tappedWeight: Approximately 190 lbs