Fully Prepped Block Ready for Assembly. Includes:

  1. BulletSquare Deck to Height on 4-Axis Rottler CNC

  2. BulletDeburr Entire Block & Main Caps.

  3. BulletHone Cylinders w/ Torque Plate

  4. BulletAlighnhone Mains, Hone Lifter Bores

  5. BulletCNC Chamfer Cylinders

  6. BulletFinal Clean Block and Paint with Primer

  7. BulletInstall Dart Cam Bearings & Test Fit Cam

  8. BulletInstall Oil Galley and Freeze Plugs

$3100.  Includes Free Shipping to Continental US ($150+ Value) Cam Bearings, Freeze Plugs & Oil Galley Plugs ($130 Value).

  1. BulletDart Fixed the Weak OEM Side Skirt and Main Webbing.  Other aftermarket block manufacturers have perpetuated the flawed GM design. Example pictures here, here and here.

  2. Bullet6 Bolt Head Provisions

  3. BulletTrue Priority Main Oiling,

  4. BulletLittle M Style Billet 4-Bolt Splayed Main Caps

  5. BulletEnlarged Water Jackets

  6. BulletUnskirted Crankcase Reduces Windage & Allows Use of a Larger Sump Oil Pan

  7. BulletFull Deck Design is 5/8” Thick with Blind Head Holes

  8. BulletExtended Cylinder Barrel Length for Greater Piston Support

  9. BulletSiamese Cylinder Bores

  10. BulletLifter Oiling Cross-over with Restrictor Provision

Little M Style Billet Splayed Caps

True Priority Main Oiling

Deep Main Saddles

Option 1:

Bare Block Straight from Dart

4.000 or 4.125 Cylinder Bores:


Free Shipping to Continental US

($150+ Value)  - 2% Discount for Cash, Check or Chase Quick Pay

Option 2:

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.”

6 Bolt Head Provisions

The Benefits of a Borowski-Built Engine

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

  2. 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. 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. 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. 5.Predictability: On-time and on-budget

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

  9. 9.Our Warranty