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Details about  Dart New Big M BBC Aluminum Block 4.600 Bore 9.800 Deck

Dart New Big M BBC Aluminum Block 4.600 Bore 9.800 Deck

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US $5,999.99
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Located in United States
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Item location:
Bay City, Michigan, United States
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Last updated on  Jan 07, 2014 11:46:27 PST  View all revisions

Item specifics

Condition: New Manufacturer Part Number:


Part Brand: Dart

 Have Questions?  Call Us: (989) 893-8299


New Dart Big M BBC Aluminum Block 4.600 Bore 9.800 Deck

Brand New Dart Big M Aluminum engine block for a Big Block Chevrolet application. 4.600" Bore Size, 9.800" Standard Deck Height, Billet Steel Main Caps. Based on the Chevrolet big block V8 design, these new 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. This block is not a factory blem/2nd. It is a first quality block, absolutely free of defects. 

Dart Big M Aluminum Engine Block Specs:

  • Dart Part #31264644
  • Premium alloy: Dart aluminum blocks are cast from virgin 355-T61 aerospace alloy for superior strength and integrity.
  • Siamesed extra thick cylinder walls to resist cracking and improve ring seal (minimum .300" thick with 4.625" bore)
  • Ductile iron sleeves with extra thick cylinder walls promote excellent ring seal.
  • Reinforcing ribs strengthen the lifter valley bellhousing flange.
  • Scalloped outer water jacket walls improve coolant flow around the cylinder barrels to equalize temperatures.
  • 4 bolt billet steel main caps have splayed outer bolts for extra strength.
  • Inboard valley head stud bosses improve gasket sealing.
  • Priority main oiling system delivers oil directly to the crankshaft bearings to enhance reliability at high engine speeds.
  • Standard BBC cam bore.
  • Standard .842" BBC lifter bores.
  • With or without distributor provision.
  • Mechanical fuel pump boss, clutch linkage mounts, and side and front motor mounts simplify installation in any chassis.
  • Dual oil pan bolt patterns fit standard and notched oil pans.
  • Average weight: 140lbs.
  • Blocks are shipped from Dart rough bored and will need to be final honed to your pistons.

Please see our Ebay Store for Dart cylinder heads, intake manifolds and complete top half packages. 

2) Buyer must checkout and complete the transaction within 5 days from the end of the listing. A formal reminder will be sent through ebay if this date is passed and if still no payment made, a NPB Warning (Non-Paying Bidder Warning) will be filed within 5 days after the reminder.


Free freight within the Continental United States to a commercial address or local terminal for pickup. Free residential delivery NOT available. Residents of Alaska & Hawaii, as well U.S. Territories will have freight costs determined on a case by case basis. Please allow up to 2 weeks for shipment, although most items are readily available in stock and ship immediately from Dart.

Please note that international buyers are responsible for paying all duties, tariffs & brokerage fees that their country or the shipping carrier may impose. Returns due to refusal of payment of said fees will result in full forfeiture of all shipping charges & a 20% restocking fee will apply. International freight charges need to be calculated on a case by case basis. Please contact us for a quote prior to purchasing a block.


On Mar-24-11 at 17:06:10 PDT, seller added the following information: