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Dart 31283465

Big Block Chevy Big M Pro Engine Block 4.500" Bore

Dart 31283465

301-31283465

jegs shipping
Ships 12/15/16 if Ordered Today
Truck Freight: $119.00
Dart 31283465 Big Block Chevy Big M Pro Engine Block 4.500" Bore $3,588.07
Big Block Chevy Big M Pro Engine Block
  • 4.500'' Bore
  • 10.600'' Deck Height

  • Specifications:

    Rear Main Seal Style
    2-Piece
    Cam Bearings Included
    Yes
    Cylinder Bore as Shipped (in.)
    4.49
    Cylinder Bore Diameter (in.)
    4.5
    Deck Height (in.)
    10.2
    Engine Block Material
    Cast iron
    Engine Block Style
    Aftermarket
    Engine Block Weight (lbs.)
    313
    Finished Cylinder Bores
    No
    Freeze Plugs Included
    Yes
    Main Bearings Included
    No
    Main Bolt Style
    4-bolt
    Main Cap Fasteners Included
    Yes
    Main Cap Material
    Steel
    Main Caps Included
    Yes
    Main Journal Type
    OEM
    Quantity
    Sold individually
    Raised Cam Location
    No
    Manufacturer's Part Number:
    31283465

    The Dart Big M Pro Cast Iron Big Block is a no compromise design that solves the problems that have plagued big-block racers for years. Working with top builders and Dart's own championship-winning Pro Stock engine department, they have designed a user-friendly block with the features you need today. For example, Dart redesigned the lubrication system to create a true ''priority main'' system that oils all of the main bearings before the lifters for extra reliability. Next Big Blocks are prone to head gasket failure in long spans between head bolts. Dart has added two head stud bosses on both sides of the lifter valley to take the place of the ''missing'' head bolts.

    With bore sizes up to 4.600'' and deck heights from 9.600'' to 11.100''; the Big M Pro gives you the versatility of build a wide variey of engine combinations!

    Features:
  • Raised Camshaft Location +.600''
  • Oil Pan rails spread +.750''
  • Accepts Stroke Combos up to 5.500''
  • Priority Main Oiling
  • Billet Steel Main Caps
  • Lifter Bores .904''
  • 2-Piece Rear Main Seal
  • Includes Coated Cam Bearings, Freeze Plugs & Dowels

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