Borowski Race Engines, Inc., Rockdale, IL

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

Our state-of-the-art CNC machinery is the most advanced available. The staff boasts more than 100 years of collective experience and includes accomplished racers and crew chiefs. We are not your usual cookie cutter, generic engine-in-a-box guys, but rather a full custom shop with a focus on American muscle and a side specialty of SCAA spec Miata engines. We marry our engines of all types with Whipple superchargers, Prochargers, Bullseye turbos and nitrous kits for an incredible range of power and performance options.

Dart Machinery has long been our preferred aftermarket block supplier and is the platform for our HellFire® line of semi-custom LS type engines. In our opinion, Dart’s LSNext® blocks are a game changer. The differences relative to a factory LS block are visually obvious. The advantages of these blocks allow us to push the envelope even further for more power and reliability. Our cutting edge LS engine technology has frequently been featured in Engine Labs magazine.

We focus on a limited number of top-quality parts vendors and maintain inventory of the key parts we use. This allows us to sell high-end parts, engines and assemblies on short lead times whereas other engine builders or parts suppliers may be waiting six months for back-ordered products. Our vendors have been carefully vetted, often with on-site visits such as shown in these videos shot at Callies and Bullseye. Our hand-selected manufacturers work closely with us and frequently provide us with their newest technology for market introduction.

In the ads below, you will see everything from bare blocks and supercharger assemblies to representative complete and fully dressed builds that can be ordered and shipped to you. If you don’t see what you are looking for, please give us a call at 815-725-2727 or send an email to

Current list of items for sale

Piston Oilers, 1/2
We believe that our custom version of the Darton MID sleeved of the Dart.....
Posted 6 days ago

Joliet, IL

Callies Billet Crank, Dyers Top Billet Rods
BOROWSKI RACE ENGINES, INC. has established its position as the leading.....
Posted 6 days ago

Joliet, IL

OVERVIEW Dart re-engineered the big block, incorporating the most.....
Posted 6 days ago

Joliet, IL

3.622 Stroke, -1cc Dome, FREE Upgraded Pins
Wiseco's Professional Series LS Pistons feature: - ArmorGlide skirt.....
Posted 6 days ago

Joliet, IL

Customizable by Borowski Race Engines, Inc.
When Dart introduced the LS Next block in 2013, it opened the door to.....
Posted 6 days ago

Joliet, IL

Borowski Race Engines, Inc.
We can offer Dart LS Next blocks in any stage of completion from "in-the-box" to a complete crate engine. Our LS Next.....
Posted 6 days ago

Joliet, IL

Available As-Produced or Upgraded
The LS Next2 block displayed at PRI 2014 will soon be released. It features 2.75" Ford type main bearings for an even.....
Posted 6 days ago

Joliet, IL

In Stock - Available for Immediate Shipment
When Dart introduced the LS Next block in 2013, it opened the door to mechanically reliable big horsepower builds. The.....
Posted 6 days ago

Joliet, IL

Borowski Race Engines, Inc.
650HP Dart LS Next LS3, CNC Ported GM LS3 Heads, ARP Head Studs -Dart LS.....
Posted 6 days ago

Joliet, IL

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Borowski Race Engines, Inc.
1545 Mound Rd
Rockdale, IL 60436
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Mon - Fri: 8:00 am - 6:00 pm
Sat: 9:30 am - 1:00 pm

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

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Call us - 866.326.9227 (Toll Free)
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