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Dart 31263454 - Dart Big M Chevy Big Blocks

  • Engine Block, Cast Iron, 4-Bolt Mains, 4.500 in. Diameter Bore, 2-Piece Rear Main Seal, Chevy, Big Block, Each
  • Application Specific
  • Additional Info
    • This part is normally shipped directly from the manufacturer / Supplier.
  • Warnings
    • This part is shipped via truck freight, additional shipping charges will apply. Multiple truck freight parts on an order may increase the shipping amount.
  • Estimated Ship Date: Today
 
BrandDart
Manufacturer's Part Number31263454
Part TypeEngines, Bare Blocks
Product LineDart Big M Chevy Big Blocks
Summit Racing Part NumberDRT-31263454
 
Main Journal TypeOEM
Engine Block StyleAftermarket/OEM tall deck
Deck Height (in)10.200 in.
Cylinder Bore as Shipped4.500 in.
Maximum Cylinder Bore Diameter4.625 in.
Engine Block MaterialCast iron
Engine Block Weight (lbs)260 lbs.
Main Bolt Style4-bolt
Main Caps IncludedYes
Main Cap MaterialSteel billet
Main Cap Fasteners IncludedYes
Main Bearings IncludedNo
Rear Main Seal Style2-piece
Finished Cylinder BoresYes
Raised Cam LocationNo
Cam Bearings IncludedYes
Freeze Plugs IncludedYes
QuantitySold individually.
ToolStroker Combinations
 

These Dart Big M Chevy big blocks are a no-compromise design that solves the problems that have plagued big blocks for years. They feature an improved oiling system, extra-thick cylinder walls, 4-bolt mains, and scalloped water jackets for improved coolant flow. They come available with a choice of two different deck heights and three cylinder bores, so there's sure to be a Big M block to fit your needs.

Warranty

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