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Part Number:

DRT-31213444-PREP

Race Prep Dart Big M Engine Block 31213444 Big Block Chevy Block - 4.500 Bore, 9.800 Deck Height

Big Block Chevy Dart Dart Big M Race Prep engine block, Align-Honed, Bell Housing Squared, Parallel Square Decked, Honed with Torque Plates, Lifter Bore Honed, Install Cam Bearings and Freeze Plugs, Block Cleaned and Ready For Assembly, 4.500 Bore, 9.800 Deck Height (Short Deck), Billet Main Caps

$5,099.95

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3% CREDIT PAYMENT FEE

An additional 3% fee will be charged for applicable engines purchased via credit card, PayPal or affirm.

FREIGHT CHARGE

This part will be shipped via truck freight and additional shipping charges will apply. Multiple parts shipped via freight in an order may increase the total shipping amount.

⚠ PROP 65 WARNING

⚠ WARNING: This product can expose you to chemicals, which are known to the State of California to cause cancer. Please contact us to obtain a list of harmful chemicals. For more information, go to www.P65Warnings.ca.gov.

Description

CNC-Motorsports takes great pride in offering a fully race prepped Dart engine block blue-printed to race specifications that is ready for you to assemble

Check and align hone mains if needed, chamfered main parting lines

Bell housing surface squared to crankshaft centerline

Stroker clearance to 4.250 stroke

Parallel square deck the deck surface to your desired deck height

Bottom of the cylinders chamfered

Top of the cylinder bore chamfered

Block de-burred to eliminate sharp edges and casting slag

Freeze plug holes and rear cam hole are chamfered

All bolt holes and oil galley holes chamfered

Oil galley holes tapped

Head and main bolt holes tapped

Chamfered distributor hole and lightly ball honed to eliminate high spots

Hone the block with torque plates to your piston bore size and verified with a profilometer

Top of lifter bores chamfered

Lifter bore checked and honed to your set of lifters you will be using in your build

Install Cam Bearings and Freeze Plugs

Block is cleaned and ready to go

Dart Big M Block has reinvented the Rat motor. Darts new cast iron Big M big block is a no-comparison design that solves the problems that have plugged big block racers for years. Dart has engineered the Big M to be the strongest, most reliable, and easiest to build big block on the market. Features Simaesed extra thick cylinder walls resist cracking and improve ring seal, Scalloped outer water jacket walls improve coolant flow around the cylinder barrels to equalize temperature. Four bolt billet main bearing caps have splayed outer bolts. Rear four bolt cap uses standard oil pump and two piece rear seal.

Specifications

More Information
CNC Part Number	DRT-31213444-PREP
Price	$5,099.95
Manufacturer's Part Number	31213444-PREP
Brands	Dart
Part Types	Engine Block
Departments	Parts
Vehicle Make	BB Chevy
Bore Size	4.500
Deck Height	9.800
Block Series	Big M
Engine Block Material	Cast Iron
Main Caps	Steel
Main Size	BB Chevy

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