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DARTPART NUMBER: 301-31264344

Aluminum Big M Engine Block 4.250" Bore

Name: Aluminum Big M Engine Block 4.250" Bore
Brand: DART
SKU: 301-31264344
Price: 6999.99 USD
Availability: InStock

^$6,999⁹⁹

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Ships on 01/15/2027

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Aluminum Blocks W/Billet Steel Main Caps

4.250'' Bore
9.800'' Deck Height
Steel Main Caps

Emissions Note:

This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

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Part TypeEngine Block

BrandDART

Package Width265.0

Weight265.0 PG

Part CategoryPerformance Parts

Main Journal Type454 mains

Engine Block StyleAftermarket

Engine Block MaterialAluminum

Cylinder Bore As Shipped4.24 in (107.696 mm)

Engine Block Weight (Lbs.)168

QuantitySold individually

Raised Cam LocationNo

Freeze Plugs IncludedYes

Main Bolt Style4-bolt

Deck Height9.8 in (248.92 mm)

Main Bearings IncludedNo

Main Cap MaterialSteel

Rear Main Seal Style2-piece

Main Caps IncludedYes

Finished Cylinder BoresNo

Cylinder Bore Diameter4.25 in (107.95 mm)

Cam Bearings IncludedYes

Part FitmentSemi Universal

Main Cap Fasteners IncludedYes

Vendor Part Number31264344

Package Qty1

Package TypeEA

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