4480 Marlea Street

Saginaw, Michigan 48601

+1 989-777-3890

24/7 Customer Support

Mon - Fri: 6 - 3:30

Catalog always available

Building performance Engines takes a special tooling partnership!

Precision Carbide Cutting Tools


At SFS, we utilize a combination of the worlds greatest materials, employee skill, and machine prowess to provide for some of the most performance demanding industries, including NASCAR and the Air Jet Industry. This means that our engine design is held to a standard that is seen nowhere else in the industry. 


Cylinder porting, fine-tuning the shapes of the ports that direct airflow to and from the cylinders, is one of the most difficult machining jobs. But it is especially important to the engine shops that build the 700-plus horsepower engines for NASCAR and other professional racing teams. Horsepower, torque and acceleration are the keys to winning a race; refining the art of porting can give a team the edge they need to win. It all begins with choosing the right machining tools to blue-print the engine block cylinders, heads and manifold to exacting standards.

When it comes to superior cylinder porting, the majority of high performance engine shops in the world have several things in common: Surfcam CAD/CAM software by Surfware, Inc., Westlake Village, CA…. and precision cutting, boring, and milling tools are all furnished by SFS Carbide Tool Company.


The process of porting is more of an art than a science. An initial Port and engine block CNC cutting tools prototype is created by hand, tested for optimum airflow and power, then refined by hand machining until the desired performance is achieved. For a prototype cylinder head one exhaust port, one intake port and one chamber are developed. Once the design is complete, the part is digitized, and computerized surfaces are generated. To create all the ports required for a cylinder head, the port surfaces are duplicated and positioned in the correct locations. Then the CNC toolpath is generated to cut the part. CAM/CNC machining the ports in this manner is faster and produces a better-quality product. Ports can be cut in less than one tenth the time it takes to cut them by hand and the ports are consistently the same. Once a design is complete any number of heads or manifolds can be produced that are exactly alike, if your machining tools hold to consistent tolerances. Our tools also can be made to work with any6 brand auto changing tool device in a CNC machining center


Dart Machinery began in humble surroundings. Richard Maskin founded Dart in 1981 in a two-car garage in Oak Park, Mich. In the years since Maskin started his business with desk and a telephone, Dart has become the leader in aftermarket cylinder heads, intake manifolds and engine blocks. Maskin is well known to drag racing fans as a mechanical mastermind whose engines have won NHRA Pro Stock championships and dozens of national events. Like many successful entrepreneurs, Maskin turned his passion for drag racing into a thriving enterprise.
Maskin’s Pro Stock roots were evident in the Race Series heads for big-block Chevrolet V8s that soon followed. In recent years, Dart’s spread-port Big Chief heads have set the standard in classes ranging from Pro Street to Pro Mod. This tradition of innovation continued with the introduction of affordable Iron Eagle and PRO 1 cylinder heads for small-block and big-block Chevy V8s.

The company has expanded its product line to include aluminum and cast-iron engine blocks that are designed to meet the specialized needs of racers and performance enthusiasts. Dart components are developed in-house, manufactured on Dart’s own CNC machining centers, and tested on Dart’s computer-controlled engine dyno. Maskin keeps current with the continuous advances in racing technology through Dart’s in-house engine program. Dart also supports the sport as an NHRA and IHRA Major Sponsor.

“Our engine program and our daily interaction with leading engine builders and winning racers keeps Dart on the leading edge of technology,” Maskin explains. “We apply everything we learn to produce more powerful and more reliable parts for Dart customers.”Dart Machinery’s Technology Center in Troy, Mich., houses the company’s administrative offices, the R&D headquarters, and inspection, machining and warehouse operations. The immense CNC machining centers that produce Dart heads and blocks from raw castings are located in a separate manufacturing facility in nearby Melvindale.

The Right Tool for the Job Does Make a Difference

SFS Carbide Tool Catalog
11.2MB (high resolution)

SFS Carbide Tool Catalog
1.4MB (low resolution)

We use all the latest CNC manufacturing and finishing equipment to produce short and long runs to the exacting requirements of our clients. Our mission is to meet and exceed the quality and accuracy demanded of your precision cutting tools so we in turn earn your repeat business. We encourage you to get a quick quote from us on stock purchases or custom tool making jobs.
Since 1921, SFS has supplied a wide range of cutting tools to a diversified number of industries worldwide. Specialty tool and die shops and machinery manufacturers have come to us through the years for custom tool making projects. In year 2000, SFS introduced it’s line of Sidewinder Vinyl Blades to meet the needs of the signage industry that required ultra sharp durable cutting tools to slice through a wide variety of vinyl sign material. Currently our Carbide tipped routing, milling and finishing tools have been used by major Hi-performance engine builders furnishing NASCAR and other auto racing applications. SFS provides engine cylinder head finishing tools accurate to a millionth of an inch.



Business Hours: Monday – Friday: 6:00 am – 3:30 pm EST


4480 Marlea Street Saginaw, Michigan 48601


Office Phone: 1-989-777-3890 Fax number: 1-989-777-3860 Cell phone Bob White: 1-248-840-0090