Welcome to DCI Motorsports!

DCI Motorsports specializes in American muscle car restoration, engine rebuilding, and is a full racing shop. Traditional Pontiac’s are our specialty, although we do restore and work on all makes and models. The shop, which is located in Atwater, Ohio, is owned and ran by Master Technician Don Johnston. DCI is committed to excellence. From repairs to classic cars and engines, to building all out hot rods, DCI is where cars reach their full potential and exceed factory performance.

DCI Split-Port Ram Air 5™ Heads and Intakes Now Available!

DCI 5 heads flow as cast 380+ cfm @ .800″ with a 2.20 valve! Learn more… DCI 5 intake Intake capable of 1 x 4, 3 x 2’s, 2 x 4’s, roots style blower, and port  fuel injection! Learn more… DCI Ram Air 5 crate engines available! Learn more…

Pontiac V8 Engine Building Services

DSCN0805DCI Motorsports is your premier Pontiac engine builder since 1983. DCI has the expertise to build reliable, high horsepower, stroked, turbocharged and  supercharged Pontiac Engines.

  • Factory engine restoration
  • Mildly modified for street
  • High performance for pro touring
  • Blower, turbocharged and supercharged
  • Stroker cranks and custom chamber heads

We don’t just build them, we also design and sell modern high performance parts for Pontiac engines! Learn more about DCI Pontiac Engine Building

LS V8 Engine Builder

With years of experience building various GM engines, DCI Motorsports has specifications and combinations for building and modifying your LS engine.

  • Mildly modified for street
  • High performance for pro touring
  • Blower, turbocharged and  supercharged
  • Stroker cranks and custom ported heads
  • Performance replacement parts and conversion kits

Learn more about DCI LS Engine Building.

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