Borowski Race Engines

Borowski Race Engines Award-Winning V8 Engine Builder for Street, Race, Off-Road, Marine. All CNC. LS, BBC, LT. Est. 1968
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Our state-of-the-art CNC equipment is the most advanced available. The staff boasts many years of experience in engine building and racing. This combination of machinery and experience mean that your engine will have more horsepower and reliability. We maintain an inventory of the parts we use so we can turn your project around quickly.

06/16/2026

It's Alive!!!
Chad has fired up his 815 hp, rules-legal, 364ci LS and it sounds nasty! It looks like he should be ready for the Mackville Nationals this weekend. Good luck Chad! (see repost of previous video in Comments for more details)

All Pro Cylinder Heads, Inc. Jesel Valvetrain Innovation Book Racing Ent. Daytona Sensors LLC Callies Performance Products Diamond Pistons COMP Cams Dart Machinery Engine Builder Magazine

06/12/2026

427ci LS with 3L Inverted Lid Whipple
We just built this LS with an inverted 3 liter Whipple for Mike Dusold of Dusold Designs. He's a custom car builder in Lewisville TX whose car builds perform as good as they look. This one’s for a 1966 Chevelle.
The design follows our standard recipe: Dart block, Callies crank and rods, Diamond pistons hydraulic roller Comp Cam and All Pro heads.
We are liking the inverted lids because they look sharp, have a slightly lower profile and lower inlet air temps with the upgraded dual core intercooler.

1,182 horsepower and 1080 torque, that will get the Chevelle down the road and Mike will know how best to put that power to the ground.


DuSold Designs Dart Machinery Callies Performance Products Diamond Pistons COMP Cams All Pro Cylinder Heads, Inc. Whipple Superchargers

06/10/2026

Chad’s Rules-Legal 815 hp, 364ci LS Sled Puller
Chad's new 364 cubic inch LS is for sled pulling. He wanted tons of horsepower and torque but within very restrictive rules.
Less than 370 cubic inches, 15-degree minimum valve angle, a 4150 carb, a distributor and no coil on plug. We will put out a detailed video after Chad’s first event. For now, here are key vendors involved and let’s roll into the dyno.
Good luck at the Mackville Wisconsin Nationals next weekend Chad!

All Pro Cylinder Heads, Inc. Jesel Valvetrain Innovationl Book Racing Ent. Daytona Sensors LLC Callies Performance Products Diamond Pistons COMP Cams Dart Machinery Engine Builder Magazine

06/05/2026

Heading for Brazil, Bryant Billet Crank Our friends in Brazil are extreme drag racers and big fans of Bryant crankshafts for their extraordinary strength and performance. We thought you’d appreciate a glimpse of their awesome good looks before being buttoned up on an engine.
Give us a call or shoot us an email if you want to go fast.
Borowski Race Engines 815-725-2727
Bryant Racing, Inc.

06/02/2026

This looks different! Is that a carb and an ignition coil on a Borowski engine? And is this one ever a screamer! Put your guesses on what was behind this build in the Comment section. A video with the full story will follow soon.

We are super excited to have the Snowden Racing ProCharged billet LS engine named as Engine of the Week by Engine Builde...
05/26/2026

We are super excited to have the Snowden Racing ProCharged billet LS engine named as Engine of the Week by Engine Builder Magazine. As mentioned in the article, they had a great season winning 5 of 5 heads up races and 2nd place in Nitro Dave’s Clash of the Titans in the 4.50ish class. All this was accomplished in Kane Snowden's rookie season. Best of luck for the rest of the 2026 race season and let's see if we can't parlay today's award into Engine of the Year.

05/25/2026

Jake and his 2007 Corvette
Jake’s 2023 Corvette came with a GM package to a road race class in Las Vegas. He was hooked and has been stepping up his game ever since with more training and vehicle upgrades for his 2007. He got his license last year and plans to hit a lot of Grid Life events starting in June at Gingerman Raceway.
Being an intense competitor, Jake wanted his engine purpose-built for serious road racing, run E85, deliver more power and be durable.
His 427ci LS includes a Dart aluminum block, Dailey 5-stage dry sump, Callies Magnum crank and Ultra rods, 10cc domed Diamond LS2K pistons, a COMP mechanical cam with 0.904” lifters, titanium intake valves in the All Pro heads along with Jesel shaft rockers. He went with our custom billet intake for hood clearance, performance and awesome good looks.
Rotating assembly balance is key to high rpm operation. Jake’s crank needed weight added. This is accomplished by replacing slugs of the steel counterweights with a much denser material known as Mallory.
We ran with dyno with a shop intake manifold as Jake’s was still in transit.
Eight hundred fifty-four horse ought to get Jake around the track pretty well. Have a great season!
Borowski Race Engines 815-725-2727
Borowski Race Engines, Inc.
1545 Mound Rd
Joliet IL 60436
Tel: 1-815-725-2727
[email protected]
www.borowskirace.com



DDart MachineryDDailey EngineeringCCallies Performance ProductsDDiamond PistonsCCOMP CamsAAll Pro Cylinder Heads, Inc.JJesel Valvetrain Innovation Gorman Performance Engineering

05/21/2026

1,344 HP Back to Back
This Whipple supercharged LS had its day on the dyno and quickly pushed out three consecutive pulls that were dead overlays. We do multiple pulls after tuning is completed in order to ensure that the rings have seated properly. How do we achieve such exceptional results? Ring quality, break-in oil and hone finish. The rings are Total Seal and we use Maxima’s specially formulated break-in oil. Hone finish is thanks to our Rottler CNC diamond hone with surface finish targeting Total Seal’s direction for the application. The hone itself is capable of extreme precision and can deliver the exact dimensions and surface finish which we confirm by profilometer.

Call us at 815-725-2727 if you’d like an LS, LT or Big Block Chevy engine built to this level of precision.

Total Seal Piston Rings Maxima Performance Auto Rottler Manufacturing

05/18/2026

Craig's LS Swapped Ultima GTR
How nice. A beautiful sports car for quiet drives from the manor through the English countryside. Wrong! This is a statement piece meant to be driven, hard.
It is an LS7 powered Ultima GTR with custom body mods developed in 2010 by a good friend of Craig’s who, sadly, recently passed.
Craig completed building the current version over 10 years ago. He recently decided to step up his game to 1,000 horsepower. His plan was a CNC-machined, custom-built, LS long block made with premium parts paired with a Harrop 2650 supercharger.
We are thrilled that he chose Borowski Race Engines for the long block.
The precision of our CNC diamond hone finish is visually apparent with its perfect crosshatch pattern.
The short block foundation is a Dart LS Next aluminum block. The rotating assembly has Callies crank and rods with Mahle pistons. The heads are Dart LS7’s that we machined from porter castings on our 5-axis. The hydraulic roller valve train features a COMP Cam, their shaft rockers and titanium intake valves. The heads are secured with P1 Manufacturing studs.
Can't wait to see Craig in action with his 1,000 horsepower flying around the track!

Ultima Sports Ltd-Official RS Ultima build Dart Machinery Callies Performance Products COMP Cams MAHLE Motorsport North America Harrop Engineering P1 Manufacturing

Tim and Kyle both got their summer rides out of mothballs and drove them to work today. Two iconic muscle cars! Isn't th...
05/14/2026

Tim and Kyle both got their summer rides out of mothballs and drove them to work today. Two iconic muscle cars! Isn't this what you'd like to see in your engine builder's parking lot?

Address

1545 Mound Road
Joliet, IL
60436

Opening Hours

Monday 8am - 6pm
Tuesday 8am - 6pm
Wednesday 8am - 6pm
Thursday 8am - 6pm
Friday 8am - 6pm

Telephone

+18157252727

Website

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