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Dart’s New Fully Skirted LS NEXT Aluminum Block

Dart’s New Fully Skirted LS NEXT Aluminum Block

  • November 20, 2015

Designed from a clean slate approach the LS Next Aluminum block has addressed the shortcomings of the LS platform and is the ideal candidate for hot rodders, drag racers, circle track competitors, off-roaders, and high performance marine enthusiasts. By utilizing…

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Dart PRO1 LS Cylinder Head – Dyno Test

Dart PRO1 LS Cylinder Head – Dyno Test

  • July 2, 2015

Turn up the volume, press the play button, and listen to 440 cubic inches of Dart LS power! This is a 440 cube LS using our LSNext iron block and the PRO1 LS heads on top. Compression checked in at 11:1,…

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The Next Generation Of Performance

The Next Generation of Performance

  • June 2, 2015

No other areas of racing engine development holds as much potential for increased performance as cylinder head selection and preparation. Dart continues its revolutionary approach to perfection and power in this area by the release of the all new LS3 based Dart PRO1 280cc cylinder head.…

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Dart Charity Engine Goes on Sale

  • February 20, 2014

richardcharityimage1-300x266A 2013-’14 engine building project featuring a 700-hp package based on a Dart LS Next block and CNC machined Pro1 aluminum cylinder heads is now available on eBay, with all proceeds going to the SEMA Memorial Scholarship fund.

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BEWARE OF COPIES

  • February 13, 2014

Cylinder head suppliers, many of them copiers, are fighting over you. Copies are almost always cheaper, but the originals are constantly evolving—always on the cutting edge while the copies have to wait.

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Identifying Dart Heads and Blocks

  • September 2, 2010

Dart heads and blocks are stamped or cast with various numbers that can tell you quite a bit about the part.  Knowing how to read and interpret these markings can save a lot of time and hassle when you need…

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Ductile Iron

  • June 10, 2010

Ductile iron is a form of cast iron which has improved strain resistance due to the spherical shape of the graphite particles in the alloy. Because of this ductile iron is an ideal material for applications that require high stress…

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Metal Casting

  • June 10, 2010

Metal Casting

Metal casting is a manufacturing process where metal is heated to a liquid form and poured into a hollow mold. The metal is allowed to solidify and the resultant casting is removed from the mold.

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Priority Main Oiling

  • June 10, 2010

Priority Main Oiling Block Cut-Away

In a priority main oiling system, the oil from the engines primary oil galley is supplied first to the main bearings and then to the cam, lifters and top end. This ensures that the critical crankshaft main bearings receive adequate lubrication for highly stressed racing applications.

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Heat Treatment (T61)

  • June 10, 2010

When specifying aluminum alloys, there are usually two important numbers used. As an example, C355-T61 is the alloy Dart uses for all of our cast aluminum blocks and cylinder heads. The C355 number refers to the specific elements contained in the alloy, and the T61 refers to the heat treatment used to condition the metal after it is cast to shape.

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Compacted Graphite Iron

  • June 10, 2010
The microscopic structure of gray iron is shown on the left, the stronger CGI is shown on the right.

The microscopic structure of gray iron is shown on the left, the stronger CGI is shown on the right.

Compacted graphite iron (CGI) is a form of cast iron which has elongated graphite particles mixed with spherical graphite particles present within the alloy, as opposed to the graphite “flakes” present in typical cast iron.

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6061 Aluminum

  • June 10, 2010

A billet 6061 aluminum block.

A billet 6061 aluminum block.

6061 is an aluminum alloy containing elements of silicon and magnesium, and is typically supplied in billet rather than cast form.  The alloy has excellent mechanical properties that make it highly suitable for a wide range of high strength manufacturing applications, from automotive parts to aircraft components.

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CNC Machining

  • June 8, 2010

A CNC Machining Center

Computer Numerical Control machining, commonly called CNC, means that all of the actions of the machining center are controlled by a computer program rather than directly by the human operator.

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Platinum Series Cylinder Heads

  • June 8, 2010

The as cast chambers of a Platinum series cylinder head.

The as cast chambers of a Platinum series cylinder head.

The Platinum version of the Dart’s popular Iron Eagle and PRO 1 heads are the direct descendants of Dart’s Pro Stock engine program. wet-flow technology and improved combustion efficiency propelled the project.

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Wet Flow Technology

  • June 8, 2010

A wet flow cylinder, displaying the flow of fluorescent dye.

A wet flow cylinder, displaying the flow of fluorescent dye.

Wet flow testing allows a cylinder head designer to look at how the air/fuel mixture behaves when routed through a head and into the combustion chamber. The air/fuel mixture is much heavier and behaves very differently than dry air, so managing the mixture efficiently gives much better results than just increasing air flow will.

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Billet Aluminum

  • February 3, 2010

Blocks of solid aluminum and various stages of machining a billet engine block.

Blocks of billet aluminum and various stages of machining on billet engine blocks.

The term “billet” generally refers to components which are machined from a drawn or forged blank of aluminum, usually 6061 alloy, rather than a cast shape. Billet aluminum differs from cast aluminum both in alloy and grain structure.

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Oiling System 101: To Restrict or Not to Restrict?

  • December 10, 2009

Tech Tips

With Dart’s vastly improved oiling system, the need to “band-aid” the oiling system with a high volume oil pump is a thing of the past. Using a standard oil pump and today’s lifters, without restrictors, makes engine assembly easier and eliminates the guess work of determining restrictor size.

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Coating Conflicts

  • December 10, 2009

Tech Tips

Dart’s Molybdenum Disulfide based coatings, such as the DC-4 lubricating coating often used on camshafts, are an excellent way to increase load capacity and improve durability… but you need to be selective about the type of break-in oil used on an engine that employs these coatings.

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