Porsche 924 SCCA D-Production
- Production: 16
- Production date: Summer 1979
- Max power (bhp/rpm): 180/7000
- Max torque (nm/rpm): ?
- Internal factory number: 933
- Launched on April 26, 1979, as Project 924/80.
- US SCCA Racers (1980, 92A0490001-92A0490016)
- Designed and assemblied at Weissach.
- Assembly and tuning finished at Warrington, Pennsylvania by Al Holbert.
- Jo Hoppen made kits available to competitors to convert their 924s into SCCA racers, valued at $45000.
- Fender extensions, front spoiler and rear bumper made in hand-laminated glass-fiber.
- Plexiglas windows in door and hatch.
- Welded-in roll cage
- Bore increased to 87.7mm for 2039cc displacement,
- Compression increased to 11.5:1.
- Optional cylinder head with larger ports and valves and new manifold.
- Bosch-Kugelfischer mechanical injection system.
- 185hp at 7500rpm.
- Turbo chassis (vented discs at the rear, five-stud wheel fixings, Bilstein gas-filled dampers).
- Porsche five-speed gearbox.
- 80% limited slip differential
- 15x7in BBS alloy rims with 24x8.5x15 tires.
- 2 cars first raced at October 1979 SCCA National series run-offs (finals) finished 12th and the other retired.
- 1980 - Doc Bundy the Winner
- 1981 - Tom Brennan the Winner
- 1982 - John O'Steen second place and Bob Hagestad third place.
- 1983 - John Schneider second place and Steven Pieper third place.
- 1985 - Tom Brennan the Winner, the category was known as GT-3.