To Pontiac traditionalists, the war cry, "Win on Sunday, sell on Monday," bred the brand's formidable reputation as a performance powerhouse. From NASCAR superspeedways to NHRA quarter-mile battlefields, Pontiac was a motorsports leader, and America's new-car buying public wanted to be on the winning team.

Though its true that Pontiac's backing of organized motorsports came and went many times over the decades, that adage that started Pontiac on its track to success was never entirely abandoned. In fact, even to the last days of Pontiac's existence, General Motors tasked its Performance Division with putting Pontiac forefront on America's tracks and using the wins to sell new vehicles.

John Heinricy is the former director of high-performance-vehicle operations for GM's Performance Division. Since 2001 until his retirement in 2008, he and his team developed, built, and tested most of GM's high-performance vehicles. John and his staff tested their handiwork on North America's best racetracks and at the famous Nordschleife (or North Course) Nurburgring track in Germany. (He drove over 1,000 laps around this tricky 150-turn, 12-mile racetrack.) Looking to the past, he served as chief engineer for the Pontiac Trans Am and Firebird (and Camaro) platforms from 1997 to 2000.

In his spare time, John plays with cars—fast ones. That includes being strapped into the best GM showroom stock and purpose-built racers the corporation builds. John won 12 SCCA National Championships, including four in Firebirds. He began racing in 1984, and won nine 24 Hour races at tracks including Watkins Glen, Mosport, and Mid-Ohio. He competed at the Daytona 24 Hours and the 12 Hours of Sebring. He was part of the team that broke three 50-year-old world speed records at Fort Stockton, Texas.

High Performance Pontiac recently chatted with John about his career inside GM and the hand he had in furthering Pontiac's reputation as The Excitement Division.

High Performance Pontiac: You started at General Motors right out of college in 1970. What were your first duties?

John Heinricy: I graduated from South Dakota Tech in the Black Hills. GM recruited me in 1969. I interviewed with Pontiac, Rochester [carburetors], and Chevrolet. I received an offer from Chevrolet and I gladly accepted their offer.

HPP: What were your first job assignments?

JH: I joined GM as a college graduate in training for two years. I worked in Chevrolet Research and Development (R&D) when it developed the aluminum Can-Am and Trans Am motors. That was pretty exciting. When my training was completed, I was assigned to the Milford Proving grounds. My position was experimental test engineer doing durability testing on various vehicles. Next I was promoted to senior experimental engineer and worked on the front-wheel-drive Citations.

HPP: Did you have any involvement with Pontiac engineering during your early career?

JH: Yes, when we developed the Citation chassis in 1976, I worked with an engineer from Pontiac to help develop the suspension packages for the Pontiac Sunbird and 6000 models. My job was to provide feedback to the design engineers on the vehicle's suspension tuning. This included making it behave the way it should and develop a handling package for its targeted market. This included testing shocks, anti-roll bars, and springs for maximum handling-and-ride comfort. I did this testing at the Milford and Arizona proving grounds.

HPP: What was the first Pontiac you tested? Please describe the experience.

JH: In early 1980 I worked with a group that was charged with designing a front-wheel-drive replacement for the Firebird and Camaro. It was called the GM80 program. The Pontiac member of the development team used a modified VW Scirocco as a Firebird development mule. Its engine was pumped up, and it had different suspension in the front and rear. It was powered by a 60-degree V-6. I did some development driving in it at the Desert Proving Grounds and it was a good handling, front-wheel-drive car. One of the things we discovered was that dealing with torque steer with higher horsepower was a major effort. The steering wheel would pull to the right under hard acceleration. After extensive testing, GM made the decision to stay with a front-engine, rear-wheel-drive chassis for the Firebird.

HPP: When and how did your racing career begin?

JH: My racing interest began in early 1984 when our group converted an '84 Corvette into an '85 production-spec, showroom-stock Sport Car Club of America (SCCA) racecar. I met [famous Corvette racer] Dick Guldstrand during this project and told him I was interested in racing. He recommended attending a SCCA driver's school to see if I liked it. With no support from GM, I leased a Citation X-11 racecar and used it to get my license. I began testing a Corvette for Tommy Morrison at Mid-Ohio for a 24 Hour showroom stock race. He asked me if I wanted to drive, and I said, "You betcha!"