Granite City Performance

custom engineered competition components

We are a small speed-shop located in central Minnesota, specializing in engine dyno simulations and design of custom engineered components for street performance, drag race, circle-track and off-road competition.

Why Use an Engine Dyno Simulation?

Top Five Reasons:

  1. Camshaft specifications are too confusing!
  2. A real dyno test is too expensive or inaccessible.
  3. Eliminate the guesswork and find the best combination of performance parts before you spend your money.
  4. Know exactly what kind of horsepower and torque you're going to get once you build your engine.
  5. Highly accurate results at low cost.


Our primary objective is to offer the finest, proven performance parts to enhance your vehicle to perform above and beyond OEM specifications. We have tools and technical resources available to create a personalized performance package custom designed per your specifications.

Our team

Don Hoeschen

Don Hoeschen
owner / engineering

"...the smell of racing fuel, burning tires and the ground pounding thump of a high-compression V8...what could be better than that?"

Blake Hoeschen

Blake Hoeschen
welder / fabrication

"...when I can feel the sound of a big cam thumpin' in my chest, all I can do is smile...because racecar!"
"...because it ain't nascar"

Company timeline

July 4 1988 - Founded "Don's Speed Shop and Performance Center"

June 2005 - Changed the company name to "Granite City Performance"

May 2013 - Became an authorized Steinjäger reseller

February 2015 - Became a distributor for CFR Performance

Don's Speed Shop & Performance Center

CFR Performance
Chris Alston's Chassisworks
Global West Performance
Holley Performance
Howards Racing Components
Moroso Performance Products
PSC Motorsports
VP Racing Fuels