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Guaranteed Fitment
Always the correct part
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Dart engineered the Big M to be the strongest, most reliable, and easiest to build big block on the market. The Dart Big M2 is designed from the ground up as a true racing engine block which can be used with standard off the shelf big block components. The Big M2 is cast from premium high strength Iron and beefed up in all the critical areas. A competition oiling system ensures adequate lubrication to the main bearings at high RPM.
- Standard 9.800? and tall 10.200? deck heights; Standard 4.250?, 4.500?, 4.560? or 4.600? bore sizes with siamesed extra thick cylinder walLS2 to resist cracking and improve ring seal (minimum .300? thick with 4.625? bore); Uses +.300? tall Gen VI style lifters. Modification for Gen IV style available; 4-bolt main bearing caps in Ductile Iron have splayed outer bolts for extra strength; True priority main oil system lubricates the main bearings before the lifters. Our stepped main oil gallery (9/16? to 1/2? to 7/16?) increases the flow of oil to the crank at high RPM, and our front oil crossover eliminates internal oil leaks around the distributor shaft; Lifter valley head stud bosses prevent blown head gaskets; Dual oil pan bolt patterns fit standard and notched oil pans; Parts kit sold separately
Attributes:
- Brand Name: Dart
- GTIN: 00807051045932
- Camshaft Lifter Bore: 0.842
- Camshaft Location: Standard
- Cylinder Bore Diameter: 4.500
- Deck Height: 9.800
- Engine: Big Block
- Engine - Web: Big Block
- Engine Block Series: Big M Sportsman
- Engine Block Weight: 250-280
- Engine Type: ICE
- Freeze Plug Type: Press Fit
- Industry: Automotive
- Main Bearing Type: Standard
- Main Cap Type: Ductile
- Make: Chevrolet
- Make - Web: Chevrolet
- Material: 220 BHN Cast Iron
- Product Type: Engine Block
- Rear Main Seal Type: 2-Piece
Extended Information:
- Country of Origin: US
- Emissions : CARB Eligible
- Life Cycle Status: Available To Order
Packing Information:
- Quantity of Each: 1
- Package UOM: EA
- Dimension: 22.250 x 20.500 x 15.000 inches
- Weight: 315.000 lb
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Shipping + Returns Shipping Policy We aim to provide a seamless shipping experience, ensuring your order arrives on time and in perfect condition. Orders are typically processed within 1-2 business days, and shipping times vary based on your location. You will receive a tracking number as soon as your order is dispatched. We offer both standard and expedited shipping options. Please note, delivery times may be affected by holidays or high demand periods. International Shipping For international orders, shipping costs and delivery times will depend on the destination. Additional customs fees may apply, which are the responsibility of the customer. Returns Policy We want you to be completely satisfied with your purchase. If you need to return an item, please contact us within 30 days of receiving it. To be eligible for a return, items must be unused, in original condition, and with all tags attached. How to Initiate a Return To start a return, contact our customer support team with your order number and reason for return. Once approved, we’ll provide instructions on how and where to send your package. Please note that return shipping costs are the responsibility of the customer, unless the item was damaged or incorrect upon arrival. Refunds Once we receive your returned item, our team will inspect it and process your refund. You’ll receive a confirmation email once your refund is complete, typically within 5-7 business days.