DART Big M Chevy Big Block Aluminum Block – 4.250" Bore, 9.800" Deck

Based on the Chevrolet big block V8 design, these Aluminum blocks feature extra strengthening in critical areas, increased displacement capacity, true priority main oiling and precision CNC machining. Conventional configuration that retains all production dimensions for compatibility with standard components. Advanced engineering makes Dart Aluminum big blocks the choice for serious competition.
Standard 9.800” or 10.200” tall deck heights available for stroker engines; 4.250”, 4.500” or 4.600” bore sizes standard; Ductile Iron sleeves with extra thick cylinder walLS2 promote excellent ring seal; Reinforcing ribs strengthen the lifter valley and bell housing flange; Inboard valley head stud bosses improve head gasket sealing; Priority main oiling system delivers oil directly to the crankshaft bearings to enhance reliability at high engine speeds; Steel 4-Bolt main caps or Ductile Iron and optional Aluminum caps. Splayed outer bolts for extra strength; Dual bolt patterns for standard BBC and notched oil pans; HIP (Hot Isostatic Pressed) Casting; Parts kit included (PN 32000006)

• Industry: Automotive
• Camshaft Location: Standard
• Cylinder Bore Diameter: 4.250 IN
• Deck Height: 9.800 IN
• Engine Block Weight: 160 LBS
• Freeze Plug Type: Screw-in
• Camshaft Lifter Bore: 0.842 IN
• Main Bearing Type: Standard
• Main Cap Type: Steel
• Material: RMR Cast Aluminum Alloy
• Rear Main Seal Type: 2-Piece
• Product Type: Engine Block
• Engine Block Material: RMR Cast Aluminum Alloy
• Make - Web: Chevrolet
• Engine - Web: Big Block
• Emissions Code: 3