Prior to the rain delay, Corbin Yamaha’s Jim Filice was fastest in 250cc Grand Prix practice at Loudon.
1. Jim Filice, Yamaha, 1:12.939
2. Rich Oliver, Yamaha, 1:13.198
3. Chuck Sorensen, Yamaha, 1:13.479
4. Jeff Wood, Yamaha, 1:13.480
5. Michael Hannas, Yamaha, 1:14.306
6. Perry Melneciuc, Yamaha, 1:14.442
7. Simon Turner, Yamaha, 1:15.093
8. Mike Himmelsbach, Aprilia, 1:15.104
9. Derek MacKelvie King, Honda, 1:15.288
10. Ed Marchini, Yamaha, 1:15.755
11. Bill Himmelsbach, Yamaha, 1:15.909
12. Chris Pyles, Yamaha, 1:16.402
13. Ed Sorbo, Yamaha, 1:16.451
14. Cory West, Yamaha, 1:16.586
15. Greg Esser, Honda, 1:16.808
16. Steve Scott, Yamaha, 1:16.824
17. Hus Holcomb, Yamaha, 1:17.121
18. Tyler Henshaw, Yamaha, 1:17.190
19. Chris Holske, Yamaha, 1:17.398
20. Stuart Nodell, Honda, 1:17.966