USA vs USA — 1970 vs 1988
| GSX Stage 1 455 | Reatta Coupe | |
|---|---|---|
| Horsepower | 360 hp | 165 hp |
| Torque | 510 lb-ft | 210 lb-ft |
| Engine Size | 7,456 cc | 3,791 cc |
| 0-60 mph | 5.5 sec | 9.5 sec |
| Top Speed | 130 mph | 123 mph |
| ¼ Mile | 13.4 sec | 17.2 sec |
| Weight | 3,600 lbs | 3,400 lbs |
| Wheelbase | 2,845 mm | 2,526 mm |
| Length | 5,156 mm | 4,684 mm |
| Units Produced | 678 | 21,751 |
| Original MSRP | $3,283 | $26,700 |
| Value (Excellent) | $250,000 | $25,000 |
| Collectibility | 9/10 | 5/10 |
| Rarity | 8/10 | 6/10 |
On balance, the 1970 Buick GSX Stage 1 455 makes a stronger case on paper with more power, quicker acceleration, higher top speed. However, the 1988 Buick Reatta Coupe counters with lighter weight, better value, and its appeal extends beyond mere numbers. Choose the 1970 Buick GSX Stage 1 455 for outright capability, or the 1988 Buick Reatta Coupe for a more distinctive ownership experience.
Buick has long offered a diverse lineup, and comparing the 1970 Buick GSX Stage 1 455 with the 1988 Buick Reatta Coupe highlights the breadth of the marque's engineering philosophy. The 1970 Buick GSX Stage 1 455 holds a clear advantage in raw power with 360 hp compared to 165 hp, a 195-horsepower difference that shapes the driving experience. Under the hood, the contrast is notable: the Buick GSX uses a V8 OHV (Buick 455 Stage 1) displacing 7,456 cc, while the Buick Reatta relies on a V6 OHV with 3,791 cc. In the sprint to 60 mph, the 1970 Buick GSX Stage 1 455 edges ahead at 5.5 seconds versus 9.5 seconds. Rarity plays a significant role here — with only 678 units built, the 1970 Buick GSX Stage 1 455 is considerably scarcer than the Buick Reatta's 21,751 examples. On the collector market, the 1970 Buick GSX Stage 1 455 commands a significant premium over the 1988 Buick Reatta Coupe, reflecting differences in prestige and rarity. From a collectibility standpoint, the 1970 Buick GSX Stage 1 455 rates higher among enthusiasts and auction houses.