Event: G.I. Joe's Grand Prix PortlandDate: 5.8.1979
Track: Portland International Raceway (United States), unknown lengthOrganiser: unknown

Portland IMSA GTU

(Grid Positions)

GridNo.DriversCarEntrantQ TimeKm/h
1st77Yoshimi KatayamaMazda RX-7Roger Mandeville1:14.0380149.8524
2nd83Don DevendorfDatsun 280ZXElectramotive
3rd33Sam PoseyDatsun ZX
4th64Dennis AasePorsche 911Aase Bros.
5th79Bob BergstromMazda RX-7Sports Ltd. Racing
6th48Frank LearyDatsun 240Z
7th17Jeff KlineMazda RX-7Racing Beat
8th38Ed ParksMazda RX-7
9th39Loren St. LawrenceDatsun 240Z
10th62Bill KollPorsche 914/6Koll Motor Sports
11th56Bruce SandersPorsche 914/6
12th49Joel AndersonDatsun 240Z
13th74Casey MollettDatsun Z
14th58Adrian GangPorsche 914/6
15th43Bob GreggPorsche 911Bob Gregg
16th70Chris VaughanAlfa Romeo GTV
17th24Wayne NunnallyPorsche 924