UPC: 31161211-4-125

4.125" Bore

$2,975.00

In stock (10 available)

406/421/434 DART SHP Fully Machined Block

4.185" Bore [31161211-4-185]

SBC CHEVY 406/421/434 CUBIC INCH DART SHP BLOCK

FINISHED OUT AT 4.155"

Actual bore size will be approx. 4.145" to be finished out at 4.155" or larger

Important Note: 2pc. Rear Main Seal. This block has 350 mains. Be sure of what size mains you require before purchasing.

Dart SHP Special High Performance Small Block Chevy Cast Iron Bare Blocks

Dart SHP Special High Performance small block Chevy cast iron bare blocks are designed for high performance and heavy duty applications. These SPH blocks are an ideal starting point for hot rodders, drag racers, circle track competitors, off-roaders and high performance marine enthusiasts.

Key features of SHP small block Chevy bare blocks are:

* Priority main oiling system

* Siamese cylinder bores with extra-thick walls

* Extra thick decks to ensure reliable head gasket seal

* Blind head bolt holes (don't go through water jacket)

* Scalloped water jacket walls for improved flow around cylinders for better cooling

* Clearance for 3.75 in. stroke with steel rods

* Splayed outer bolts on middle main bearing caps

* Provisions for OE stock roller lifters and cams

* All OE bolt holes starter, clutch ball, etc.

* Uses 1981 to 1985 stock style oil pan and passenger side dipstick

* Uses stocked stamped steel or plastic timing cover

Pictured below is the new Dart SHP block.

This block is the absolute ultimate in quality, durability, and value.

IMPORTANT NOTE.

This block has 350 mains. Be sure of what size mains you require before purchasing!

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Machine Work

The Dart block is bored and decked to size with our Centroid CNC touch probe machine. Few machine shops have a machine of this accuracy.

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Decking

We deck the blocks to an RA finish of approx. 15 or better. We will deck this block to the exact specs you need.

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When we're finished decking the block, it is within approx. .001 accuracy from end to end. Many machine shops fail to catch this as the machinery they use does not allow for such accuracy.

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Plate Honing

We then plate hone the block with our Sunnen SV15 diamond hone machine .

This is also a very advanced machine that hones the block with a finish unlike conventional machines.

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Attention Valued Customers!

When it comes to highly technical questions, our sales team at Skip White Performance might not always have the detailed answers you're looking for, especially on topics like installation procedures or tuning.

For those with detailed or specific questions, we strongly recommend checking out automotive forums and communities where these products are frequently discussed. These forums are a treasure trove of information and can provide the expert advice you need. Additionally, YouTube has countless tutorials and guides that walk you through the installation process and other technical details.

Please note: While we're here to provide top-notch products, we cannot be held responsible for any damage resulting from the use or installation of this product. Make sure to do your research and proceed with caution!

Thank you for choosing Skip White Performance!

Disclaimer

Skip White Performance is not liable for any collateral damage or incidental issues arising from the use or misuse of our products. High-performance parts are intended for experienced professionals and enthusiasts. Use at your own risk.

Product Information

UPC	31161211-4-125
Product Type	Bare Block
Price (excl. tax)	$2,975.00
Price (incl. tax)	$2,975.00
Tax	$0.00
Availability	In stock (10 available)
Block	SBC
Brand	DART
Shipping Cost	250.0
Bore	4.125
Deck Height	9.025
Material	Class 30 Grey Iron
Camshaft Location	Standard
Main Bearing Type	Chevy 350
Camshaft Lifter Bore	0.842
Freight Required	No
Number of reviews	0

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