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Daytona was the first round of the series, as per usual. A very big eighty two car entry would make for the start. The field was now a classical GTX-GTP-GTO-GTU mix, but a new car was here to upset everyone. Porsche had brought the new immaculate Porsche 962, which was to be driven by Mario and Michael Andretti. The March 83G Porsche which was driven by Graham Duxbury, Tony Martin and Sarel van der Merwetook the win over the March MARCH 83G driven by Terry Wolters and Randy Lanier and the TBird Swap Shop Porsche 935, driven by Bob Wollek, AJ Foyt and Derek Bell, appeared as a threat to the future winners, but it would not make it two in a row as AJ Foyt nullyfied their chances for the win when he had two off-courses. The GTO category was won by the very strong Chevrolet Camaro driven by Billy Hagan-Gene Felton and Terry Labonte. Jack Baldwin, Ira Young and Bob Reed dominated the GTU class and had a new win for Mazda.

The next race was set for Miami, on the street circuit. Brian Redman and Hurley Haywood took the win in the Jagaur XJR5. The second Jaguar, driven by Bob Tullius and Pat Bedard, finished second. It was the first ever one-two for the British marque, and for Group 44. Third overall was the Conte Racing Lola T600 Chevrolet driven by John Morton and Bob Lobenberg. Bob Wollek and AJ Foyt had a brilliant drive and brought their TBird Swap Shop Porsche 935L to fourth place. The two supporting races, featuring the GTUs, then the GTOs. Jack Baldwin was on the pole on his CCR Mazda RX7. After dominating the early stages of the race, a yellow flag allowed Lee Mueller to take the lead, but only for a short while. A deflating tire put hom off the pace, as well as Jack Baldwin, who finished fifth. Chris Cord, on the AAR Toyota Celica, was charging hard and took the lead, he finally won the forty five minute race. The GTO event saw a new winner. Gene Felton was on the pole, but he was not driving his usual Stratagraph Chevrolet Camaro. He was driving the Auriga Racing Chevrolet Corvette. Gene Felton had not as much luck as usual and finished only fifth, while Walt Bohren, driving the Dingman Bros Chevrolet -Corvette, had a brilliant drive, starting only sixth on the grid, to win the race.

An old Porsche 935 driven by Mauricio de Narvaez, Stefan Johansson and Hans Heyer took an upsetting victory at Sebring, beating up the big prototypes. Randy Lanier, Bill Whittington and Marty Hinze finished in second position, followed by Derek Bell, AJ Foyt and Bob Wollek in a Porsche 935L. Billy Hagan and Gene Felton, in the Stratagraph Chevrolet Camaro, took the GTO class win. They were just ahead of the winning GTU car, which was a Mazda RX7 driven by Jack Baldwin, Ira Young and Bob Reed. George Alderman and Carson Baird took a convincing second place in class.

At Road Atlanta, it was a Don and Bill show, as the Whittington bros had a great battle for the win until the finish. They did 1-2, both driving March 83G Chevrolets. Brian Redman and Pat Bedard were next in a Jaguar XJR5. Billy Hagan and Gene Felton cruised to a new GTO victory, followed by Roger Mandeville and Amos Johnson in a Mazda RX7. Jack Baldwin and Bob Reed again took the GTU class, with Jack Dunham and Jeff Kline coming in second place.

Riverside was a fantastic race, with the new Porsche 962 driven by Al Holbert and Derek Bell fighting all the way with the March 84G Chevrolet driven by Randy Lanier and Bill Whittington. The March won by a scant margin of 3s7. Kenper Miller and David Cowart finished third. Roger Mandeville and Amos Johnson won the GTO class in a Mazda RX7, beating the bigger cars. Rick Borlase, Don Kravig and Michael Hammond finished second in a Porsche 934. John Schneider and Elliot Forbes Robinson won the GTU class in the Performance Motorsports Porsche 924GTR, beating the Mazda RX7 driven by Jack Dunham and Jeff Kline.

John Bauer drove a new Ford Thunderbird to the GTO win in the GT race held at Laguna Seca. Gene Felton, driving the Roadsport Pontiac Firebird, finished second and George Follmer took a good third place in his own Chevrolet Corvette. Jim Adams took his Toyota Celica to the GTU class win, beating Jack Baldwin in the process. Logan Blackburn was next in his Datsun 280ZX. Randy Lanier won again the GTP race in his March 84G Chevrolet, ahead of Kenper Miller, who drove a March 83G Chevrolet and Sarel van deer Merwe, in a March 83G Porsche.

Randy Lanier and Bill Whittington powered their March 84G Chevrolet to another victory at Charlotte, beating the two Group 44 Jaguar XJR5 driven by Bob Tullius-Chip Robinson and Brian Redman-Pat Bedard. Billy Hagan and Gene Felton were back to victory in GTO class, just ahead of Walt Bohren's Chevrolet Corvette. Chris Cord and Jim Adams took another GTU class win, with Al Bacon and Charles Guest in a Mazda RX7, and Clay Young and Doug Grunnet in a Pontiac Fiero.

Lime Rock GTO, run under heavy rains, went to Roger Mandeville's Mazda RX7, who finished ahead of Carson Baird's Datsun 280Zx and Billy Hagan's Chevrolet Camaro. Jack Baldwin won the GTU race in his Mazda RX7, with Chris Cord second in his Toyota Celica and Clay Young third in his Pontiac Fiero. Sarel van der Merwe took et GTP race, aboard his March 83G Porsche with Randy Lanier second and Al Holbert's Porsche 962 taking third place.

Al Holbert and Derek Bell took a nice victory at Mid Ohio with the Porsche 962. The March 84G Chevrolet driven by Bill Whittington and Randy Lanier took a fine second place, a mere 4s in arrears. Hurley Haywood and Bobby Rahal were third in another Porsche 962. Chet Vincentz and Dave White won the GTO class in the Electrodyne Porsche 934, two laps ahead of Roger Mandeville and Amos Johnson's Mazda RX7. Jack Dunham and Jeff Kline won the GTU class in the Dunham Trucking Mazda RX7, George Alderman and Lew Price took the second place in a Datsun 280ZX.

Al Holbert and Derek Bell, along with Jim Adams were successful again at Watkins Glen, for the 6 Hour race. Bruce Leven and John Paul Jr finished second in the Bayside Porsche 962 and Brian Redman and Hurley Haywood in third place. Chet Vincentz and Jim Mullen took a GTO win in a Porsche 934, but they were closely followed by the winning GTU car, which was the Porsche 924GTR driven by John Schneider and Elliot Forbes Robinson. Jack Dunham and Jeff Kline were second in GTU in a Mazda RX7.

Jack Baldwin was the winner of the Portland GTU race, 4s ahead of Jim Adams' Toyota Celica. Chris Cord Toyota Celica was third. The main race was won by the March 84G Chevrolet driven by Randy Lanier and Bill Whittington, which beat the Jaguar XJR5 driven by Bob Tullius and Doc Bundy. Al Holbert and Derek Bell finished third. The GTO class was won by the Chrvrolet Corvette driven by David Schroeder and Tom Hendrickson, which was no match for the Mazda RX7 driven by Roger Mandeville and Amos Johnson.

At Sears Point, Bill Whittington won the race in his old car, which was a March 83G Chevrolet. The two Jaguar XJR5s driven by Doc Bundy and Brian Redman finished second and third. The GT race was won by John Bauer, whose Ford Thunderbird was dominant. He was far away from the two Toyota Celicas driven by Dennis Aase and Chris Cord, who took the two GTU first places.

Al Holbert and Derek Bell were the winners of the Road America race in their Porsche 962, Bruce Leven and David Hobbs were second, ahead of Randy Lanier and Bill Whittington's March 84G Chevrolet. Chet Vincentz and Jim Mullen took another GTO win for Porsche, but Dan Schott and Jim Fay were second in a Pontiac Firebird. Jack Dunham and Jeff Kline took the GTU win, with Kelly Marsh, Ron Pawley and Don Marsh ending up in second place.

At Pocono, Al Holbert and Derek Bell secured another victory for themselves, beating the Jaguar XJR5 driven by Bob Tullius and Doc Bundy. Don and DaleWhittington finished third in the March 83G Chevrolet. Gene Felton won the GTO class in Gary English Chevrolet Camaro, followed by Cet Vincentz and Jim Mullen. John Schneider and Elliot Forbes Robinson defeated the Mazda RX7 driven by Jack Baldwin in GTU.

Clay Young won the Michigan GTU race in his Pontiac Fiero, with Bob Bergstrom's Porsche 924GTR coming in second place and Jack Baldwin in third. Randy Lanier and Bill Whittington took another victory, while Dave Cowart and Kenper Miller finished second and Bruce Leven, co-driven by Bill Adam, finished in third place. Chet Vincentz finished in fifth place and won the GTO class, beating the Ford Thunderbird driven by John Bauer and Bruce Jenner.

Dale Whittington and Randy Lanier took another win in the old March 83G Chevrolet at Watkins Glen, with John Kalagian and John Lloyd finishing in second place in a March 84G Chevrolet. Lyn St James and Howdy Holmes took the third place in an Argo JM16 Ford. Clay Young posted a fantastic race in his Pontiac Fiero, finishing in seventh place and ahead of the Porsche 934 driven by Chet Vincentz and Jim Mullen, who won the GTO class.

The Daytona Finale was won by Derek Bell and Al Holbert, who concluded a great season. Brian Redman and Hurley Haywood finished third while Bob Wollek and Al Holbert were classified in third place with Preston Henn's Porsche 962. The GTO class was won by the Ford Mustang driven by Willy T.Ribbs and Wally Dallenbach Jr, who finished ahead of Walt Bohren's mighty Chevrolet Corvette. John Schneider and Elliot Forbes Robinson were dominant in GTU, with their Porsche 924GTR. Jack Baldwin and Ira Young ended up in second place, with the former taking the GTU crown.