Dart 31213644 Big M2 Cast Iron Engine Block, 9.8 Deck, 4.6 Bore, Billet Caps

$4,318.70
MSRP: $4,452.27
(You save $133.57 )
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SKU:
DAT31213644
MPN:
31213644
Condition:
New
Weight:
250.00 LBS
Shipping:
Calculated at Checkout

Applies To Continental U.S. orders only

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New and improved through a state-of-the-art foundry and new tooling, the "Big M2" is engineered to be the most durable and easiest to build big block Chevy cur-rently offered. Cast from high-strength iron, block may be used with standard off the shelf components, and fea-tures a competition oiling system, extra-thick cylinder walls and decks, and choice of ductile iron or billet steel main caps. Choose from standard (9.800") or tall deck (10.200") versions in 4.250", 4.500", or 4.600" bore sizes


Features
  • Standard 9.800”, 10.200” and 10.400″ deck heights
  • Standard 4.250”, 4.500”, 4.560”, or 4.600” bore sizes
  • Siamesed extra thick cylinder walls to resist cracking and improve ring seal
  • Minimum .300” thick with 4.625” bore
  • Available in .400” raised cam
  • Uses +.300” tall GEN VI style lifters.
  • 4-bolt main bearing caps in steel or ductile iron have splayed outer bolts for extra strength
  • Lifter valley head stud bosses help prevent blown head gaskets
  • Easy to install AN fitting oil gallery plugs
  • Main Journal Type:
    Standard BBC
    Engine Block Style:
    Stock/OEM standard deck
    Deck Height (in.):
    9.800 in.
    Cylinder Bore as Shipped:
    4.590 in.
    Cylinder Bore Diameter:
    4.600 in.
    Maximum Bore Diameter:
    4.625 in.
    Engine Block Material:
    Cast iron
    Engine Block Weight (lbs):
    280 lbs.
    Main Bolt Style:
    4-bolt
    Main Caps Included:
    Yes
    Main Cap Material:
    Billet Steel
    Main Cap Fasteners Included:
    Yes
    Main Bearings Included:
    No
    Rear Main Seal Style:
    2-piece
    Finished Cylinder Bores:
    No
    Raised Cam Location:
    No
    Cam Bearings Included:
    Yes
    Freeze Plugs Included:
    Yes
    Quantity:
    Sold individually.
    Notes:
    Block bores are .10 undersized to allow for piston set up.

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