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For Sale: Dart LS Aluminum Short Block for Big Boost

Borowski Race Engines

Ad #182262561   Posted:2014-08-13 07:02:06

This ad expired 71 days ago.

427 Cubic Inch Short block includes:
-Dart LS Next Aluminum Block
-Callies Magnum LS Crank
-Callies Ultra H-Beam Rod SBC
-Diamond Custom Borowski Race Engine LS Pistons
-Diamond Pro Select AP Steel Piston Rings
-Clevite 77 High-Performance Bearings
-Clevite H-Series Rod BearingsAbove Added: Wed May 14, 2014, 11:40 am ESTIncludes Dart cam Bearings in price that would sell for $115.88 on their own.Above Added: Tue May 13, 2014, 9:26 am EST

Why the Dart LS Next block?

The LS Next block is the first significant change in the bottom end architecture of the LS engine platform. By eliminating the Y-blockdesign and utilizing conventional style main caps and oil pans, (stock pans can be used with Moroso oil pan spacers) Dart has addressed the problems resulting from the LS engines separated crankcase bays. Windage is greatly reduced, resulting in increased power and improved lubrication.

This design change led to several additional improvements. The main webs are significantly stronger because the bay to bay breathing windows are eliminated in Darts design. Deleting the windows also allows the cylinder barrels to be extended by .3750 into the crank case, providing greater piston support at the bottom of the stroke. Two standard bore sizes are available, 4.000 and 4.125. Maximum bore of 4.220 for iron and 4.165 for aluminim, or optional Darton M.I.D. sleeve kit allowing up to 4.220 bore.

All stock and aftermarket LS components can be utilized. Conventional style 4-bolt steel main caps are used. A 5/8 thick full deck design is utilized for superior strength, with six head bolts per cylinder to provide secure clamping. Dart priority main oiling system ensures high rpm reliability and includes provision for oil restrictors in the lifter valley.


Dart LS Next block is cast in the USA with premium cast iron
alloy or aluminum

Conventional style 4-bolt steel main caps with 7/16 bolts are used

Full main webbing for maximum bottom end strength

Cylinder barrels are extended by .3750 at the bottom, providing greater
piston support for all combinations

9.240 deck height, with options of 9.450" are available which allows
for a possible effective barrel length of 9.825 deck block

Extra thick Siamese cylinder bores allow for larger displacement
capacity and a max bore size of at least 4.220

A 5/8 thick full deck design with a 9.240deck height

Six head bolts per cylinder provide secure clamping for power
adder applications

Head bolts are upgraded to 7/16 for increased strength

Blind head bolt holes dont go through into the water jacket

Provision for oil restrictors in the lifter valley

Revised low restriction priority main oiling system

Pro-Stock / Pro-Mod big block style stepped main oil galley

An external oil filter must be used with stock or aftermarket oil pumps

Dual starter mounts

The water jacket on the #1 cylinder has been expanded for
additional cooling capacity

LSX style lifter bosses and dog bone provision are provided

Recent customer that brought in a LS2 for a rebuild: Seeing them side by side, the Dart block is clearly a better piece - even from a distance.

Short block includes:
-Dart LS Next Aluminum Block
-Callies Magnum LS Crank
-Callies Ultra H-Beam Rod SBC
-Diamond Custom Borowski Race Engine LS Pistons
-Diamond Pro Select AP Steel Piston Rings
-Clevite 77 High-Performance Bearings
-Clevite H-Series Rod Bearings

-Custom Stroke and pin Height
-427 cubic inches of displacement
-can handle up to 30 lbs of boost
-custom ring pack
-double pin oiling

Includes assembly and Labor for $10,613.18 (without sales tax)

Borowski Race Enterprises

Custom CNC Engine Builders for Street, Race, Restoration & Marine. Est. 1968.

Our state-of-the-art CNC equipment is the most advanced available in the region. The staff boasts more than 100 years of collective experience and include accomplished racers and crew chiefs. This combination of machinery and experience mean that your engine will have more horsepower and reliability. It also allows us to turn your project around quickly.


The Benefits of a Borowski-Built Engine

1.Custom Made to Your Exact Specifications: With our guidance, you pick the sound, look, power and accessories. We make it happen.

2.Technical Knowledge: We make cutting edge engines for a broad range of motorsports. In season, our staff is at the track and on the water to help keep you ahead of the pack.

3.Machining Capabilities: Our CNC engine machining equipment and shop professionals are second to none. That shows in our build quality, reliability and performance.

4.Quality: Our levels of care and precision go far beyond OEM or standard aftermarket. Machining and assembly of your project is performed only by highly skilled technicians.

5.Predictability: On-time and on-budget

6.Build Time: Thanks to our CNC processes, we can complete machining quickly. We have strong relationships with our key suppliers which helps avoid delay waiting for parts.

7.Transparency: Your entire build is photographed and documented. Progress pictures are uploaded and viewable on our Flickr. You are welcome to visit in person any time and will be invited to attend the video-taped dyno session.

8.Honesty and Integrity as evidenced by our A+ rating and accreditation by Better Business Bureau.

9.Our Warranty

1545 Mound Road
Rockdale, IL 60436


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Business Phone Number: 815-725-2727
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Item Location: JOLIET, IL Get Directions To This City
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This ad expired 71 days ago.
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Ad posted by:
BorowskiRace (#327877)

Borowski Race Engines, Inc.
1545 Mound Rd
Rockdale, IL 60436
(815) 725-2727
Business Storefront Contact
Business Website
Member Since: 2008-10-23
Phone Number: 815-725-2727

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Average Accepted Sale Price: $0.00
Average Honor Payment: $0.00

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Execution Stats: 0.105 sec / 6.5 MB used / 6.6 MB peak