Australia-wide shipping on performance, 4x4 and vehicle-specific upgrades.

Dart Big M2 Block Chevy Cast Iron Bare Blocks 31223544 Blocks, M Sportsman Series, Iron,9.800 in. Deck Height, 4.560 in,Bore,4-Bolt Main,2-Piece Rear Main Seal, Block, Chevy, Each

SKU: DRT31223544

Engines, Bare Blocks

Dart Big M2 Block Chevy Cast Iron Bare Blocks 31223544 Blocks, M Sportsman Series, Iron,9.800 in. Deck Height, 4.560 in,Bore,4-Bolt Main,2-Piece Rear Main Seal, Block, Chevy, Each

SKU: DRT31223544

Engines, Bare Blocks

Sale ends in Calculating...

A$10,225.71 A$11,057.96
BACKORDER This item will be special ordered in for you. Contact us prior to purchase if you require an ETA.
View cart
We accept
American Express
Mastercard
Visa
PayPal Checkout
Direct Deposit
Afterpay
Apple Pay
Google Pay
Zip Pay

Description

Dart engineered the Big M to be the strongest, most reliable, and easiest-to-build big block on the market. The Dart Big M2 big block Chevy cast iron bare blocks are designed from the ground up as a true racing engine block which can be used with standard off the shelf big block components. They're 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. Choose from the available deck height and cylinder bore diameter options.

Part Type

Engines, Bare Blocks

Data: v4.2 - Upd: 2026-09-27 17:52:33

Specifications

Product Attributes - Brand
Dart
Product Attributes - Manufacturer's Part Number
31223544
Product Attributes - Part Type
Engines, Bare Blocks
Product Attributes - Product Line
Dart Big M2 Big Block Chevy Cast Iron Bare Blocks
Product Attributes - UPC
807051045994
Product Attributes - Main Journal Type
Chevy 454
Product Attributes - Engine Block Material
Cast iron
Product Attributes - Engine Block Style
Aftermarket
Product Attributes - Engine Block Deck Height
Standard deck
Product Attributes - Deck Height (in.)
9.800 in.
Product Attributes - Cylinder Bore as Shipped
4.550 in.
Product Attributes - Cylinder Bore Diameter
4.560 in.
Product Attributes - Maximum Bore Diameter (in.)
4.625
Product Attributes - Camshaft Location
Standard
Product Attributes - Engine Block Weight (lbs.)
280 lbs.
Product Attributes - Main Bolt Style
4-bolt
Product Attributes - Main Caps Included
Yes
Product Attributes - Main Cap Material
Ductile iron
Product Attributes - Main Cap Fasteners Included
Yes
Product Attributes - Main Bearings Included
No
Product Attributes - Rear Main Seal Style
2-piece
Product Attributes - Finished Cylinder Bores
No
Product Attributes - Raised Cam Location
No
Product Attributes - Cam Bearings Included
No
Product Attributes - Freeze Plugs Included
Yes
Product Attributes - Remanufactured
No
Product Attributes - Quantity
Sold individually.

Reference Information

Brand Name/s Dart
StreetFX SKU drt31223544
SFX Item ID 5090037
Supplier Item Code 5090037
Manufacturer SKU 31223544
Manufacturer UPC 807051045994
Alternative References 4-Bolt, 2-Piece

Compatibility

Application Data
  • MakeCHEVROLET
    Engine TypeV8
    Engine FamilyChevy big block Mark IV

Loading compatibility information...