Italy vs Italy — 1963 vs 1968
| 2500 GT Allemano Coupe | Islero S | |
|---|---|---|
| Horsepower | 245 hp | 350 hp |
| Torque | 188 lb-ft | 273 lb-ft |
| Engine Size | 2,467 cc | 3,929 cc |
| 0-60 mph | 6.5 sec | 6.2 sec |
| Top Speed | 155 mph | 164 mph |
| ¼ Mile | 14.8 sec | 14.2 sec |
| Weight | 2,072 lbs | 2,833 lbs |
| Wheelbase | 2,350 mm | 2,550 mm |
| Length | 4,090 mm | 4,480 mm |
| Units Produced | 12 | 225 |
| Original MSRP | — | $14,500 |
| Value (Excellent) | $1,500,000 | $700,000 |
| Collectibility | 10/10 | 8/10 |
| Rarity | 10/10 | 8/10 |
Two outstanding machines, each with compelling strengths. The 1963 ATS 2500 GT Allemano Coupe excels in lighter weight, greater rarity, stronger collectibility, while the 1968 Lamborghini Islero S stands out for more power, quicker acceleration, higher top speed. The best advice? Drive both if you can, then follow your instincts.
Among Grand Tourer enthusiasts, the matchup between the 1963 ATS 2500 GT Allemano Coupe and 1968 Lamborghini Islero S is one for the ages. These Muscle era machines competed directly for buyers' attention and continue to vie for collectors' affections today. The 1968 Lamborghini Islero S holds a clear advantage in raw power with 350 hp compared to 245 hp, a 105-horsepower difference that shapes the driving experience. Under the hood, the contrast is notable: the ATS 2500 GT uses a V8 DOHC displacing 2,467 cc, while the Lamborghini Islero relies on a V12 DOHC with 3,929 cc. In the sprint to 60 mph, the 1968 Lamborghini Islero S edges ahead at 6.2 seconds versus 6.5 seconds. The ATS 2500 GT carries a weight advantage, tipping the scales 761 lbs lighter. Rarity plays a significant role here — with only 12 units built, the 1963 ATS 2500 GT Allemano Coupe is considerably scarcer than the Lamborghini Islero's 225 examples. From a collectibility standpoint, the 1963 ATS 2500 GT Allemano Coupe rates higher among enthusiasts and auction houses.