Dart Big M2 Pro Series Big Block Chevy Cast Iron Bare Blocks 31223645

Name: Dart Big M2 Pro Series Big Block Chevy Cast Iron Bare Blocks
Brand: Dart
SKU: DRT-31223645
Price: 3869.99 USD
Availability: OutOfStock
Rating: 0 (0 reviews)

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Part Number: DRT-31223645

$3,869.99

Dart Big M2 Pro Series Big Block Chevy Cast Iron Bare Blocks

Bare Blocks, Dart Big M Sportsman Series, Cast Iron,9.800 in. Deck Height, 4.600 in,Bore,4-Bolt Main,2-Piece Rear Main Seal, Big Block, Chevy, Each
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Dart Big M2 Pro Series Big Block Chevy Cast Iron Bare Blocks 31223645

DRT-31223645

Not Yet Reviewed

Part Number: DRT-31223645

Estimated Ship Date: Feb 16, 2027

$3,869.99

Overview

Applications

Q&A

Instructions & Calculators

Estimated Ship Date: Feb 16, 2027

Overview

Brand:

Dart

Manufacturer's Part Number:

31223645

Part Type:

Engines, Bare Blocks

Product Line:

Dart Big M2 Pro Series Big Block Chevy Cast Iron Bare Blocks

Summit Racing Part Number:

DRT-31223645

UPC:

807051046465

Main Journal Type:

Chevy 454

Engine Block Material:

Cast iron

Engine Block Style:

Aftermarket

Engine Block Deck Height:

Standard deck

Deck Height (in.):

9.800 in.

Cylinder Bore as Shipped:

4.590 in.

Cylinder Bore Diameter:

4.600 in.

Maximum Bore Diameter (in.):

4.625

Camshaft Location:

Raised 0.400 in.

Engine Block Weight (lbs.):

280 lbs.

Main Bolt Style:

4-bolt

Main Caps Included:

Yes

Main Cap Material:

Ductile iron

Main Cap Fasteners Included:

Yes

Main Bearings Included:

Rear Main Seal Style:

2-piece

Finished Cylinder Bores:

Raised Cam Location:

Yes

Cam Bearings Included:

Freeze Plugs Included:

Yes

Remanufactured:

Quantity:

Sold individually.

Notes:

Block has +.400 raised camshaft location.

Dart Big M2 Pro Series Big Block Chevy Cast Iron Bare Blocks

Dart engineered the Big M to be the strongest, most reliable, and easiest-to-build big block on the market. Dart Big M2 Pro Series 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. The Big M2 is 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. With deck heights from 9.600 in. to 11.100 in., a +.600 in. raised cam location, spread oil pan rails and bore sizes up to 4.600 in., the Big M Pro gives you the versatility to build a wide variety of engine combinations.

Applications