Dart Big M Block 31213544 BBC 4.560 Bore, 9.800 Deck Height

BB Chevy, Dart block, Dart Big M Block, 9.800 Deck Height, 4.560 Bore, Billet Steel Main Caps, Engine Block, 2pc Rear Seal, Ships from Dart

$4,319.99

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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.

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Description

Dart engineered the Big M to be the strongest, most reliable, and easiest to build big block on the market.

9.800” deck height

4.560” bore, Max bore is 4.625 size, siamesed extra thick cylinder walls to resist cracking and improve ring seal(minimum .300” thick with 4.625” bore).

Uses +.300” tall Gen VI style lifters

4-bolt billet main bearing caps have splayed outer bolts for extra strength

True priority main oil system lubricates the main bearings before the lifters. Our stepped main oil gallery (9/16“ to 1/2“ to 7/16“) increases the flow of oil to the crank at high RPM, and our front oil crossover eliminates internal oil leaks around the distributor shaft.

Lifter valley head stud bosses prevent blown head gaskets

Dual oil pan bolt patterns fit standard and notched oil pans.

Big M: Parts kit included (PN 32000039 )

220 BHN Cast iron material

Specifications

More Information
CNC Part Number	DRT-31213544
Price	$4,319.99
Sold As	Single
Manufacturer's Part Number	31213544
Brands	Dart
Part Types	Engine Block
Departments	Parts
Vehicle Make	BB Chevy
Bore Size	4.560
Deck Height	9.800
Block Series	Big M
Engine Block Material	Cast Iron
Main Caps	Steel
Main Size	Std/BBC
Cam Location	Standard Location
Lifter Bore Size	.842
Cam Tunnel Size	Standard Size

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