Italy vs Italy — 1966 vs 1987
| Spider Duetto 1600 | 75 Turbo Evoluzione IMSA | |
|---|---|---|
| Horsepower | 109 hp | 155 hp |
| Torque | 101 lb-ft | 167 lb-ft |
| Engine Size | 1,570 cc | 1,779 cc |
| 0-60 mph | 11.2 sec | 6.5 sec |
| Top Speed | 115 mph | 137 mph |
| ¼ Mile | 17.8 sec | 15.0 sec |
| Weight | — | 2,381 lbs |
| Wheelbase | 2,250 mm | 2,510 mm |
| Length | 4,250 mm | 4,380 mm |
| Units Produced | 6,325 | 500 |
| Value (Excellent) | $85,000 | $150,000 |
| Collectibility | 5/10 | 8/10 |
| Rarity | 6/10 | 8/10 |
The 1987 Alfa Romeo 75 Turbo Evoluzione IMSA emerges ahead in most objective measures, offering more power, quicker acceleration, higher top speed. The 1966 Alfa Romeo Spider Duetto 1600 counters with better value, but the numbers favor its rival. Still, both are remarkable machines, and the final choice often comes down to which driving experience speaks to you.
The 1966 Alfa Romeo Spider Duetto 1600 and 1987 Alfa Romeo 75 Turbo Evoluzione IMSA share a manufacturer in Alfa Romeo, but that's where the similarities get interesting. These two models reveal the versatility and ambition of the Alfa Romeo brand. The 1987 Alfa Romeo 75 Turbo Evoluzione IMSA holds a clear advantage in raw power with 155 hp compared to 109 hp, a 46-horsepower difference that shapes the driving experience. Under the hood, the contrast is notable: the Alfa Romeo Spider uses a Inline-4 DOHC 8V displacing 1,570 cc, while the Alfa Romeo 75 Turbo Evoluzione relies on a Inline-4 DOHC 8V Turbocharged with 1,779 cc. In the sprint to 60 mph, the 1987 Alfa Romeo 75 Turbo Evoluzione IMSA edges ahead at 6.5 seconds versus 11.2 seconds. Rarity plays a significant role here — with only 500 units built, the 1987 Alfa Romeo 75 Turbo Evoluzione IMSA is considerably scarcer than the Alfa Romeo Spider's 6,325 examples. From a collectibility standpoint, the 1987 Alfa Romeo 75 Turbo Evoluzione IMSA rates higher among enthusiasts and auction houses.