USA vs USA — 2008 vs 1973
| G8 GXP 6.2 LS3 | Grand Am 455 V8 | |
|---|---|---|
| Horsepower | 415 hp | 250 hp |
| Torque | 415 lb-ft | 390 lb-ft |
| Engine Size | 6,162 cc | 7,456 cc |
| 0-60 mph | 4.7 sec | 8.0 sec |
| Top Speed | 170 mph | 118 mph |
| ¼ Mile | 12.9 sec | 15.8 sec |
| Weight | 3,995 lbs | 4,100 lbs |
| Wheelbase | 2,915 mm | 2,845 mm |
| Length | 4,979 mm | 5,334 mm |
| Units Produced | 1,829 | 56,063 |
| Original MSRP | $39,995 | $4,353 |
| Value (Excellent) | $60,000 | $32,000 |
| Collectibility | 7/10 | 6/10 |
| Rarity | 8/10 | 5/10 |
The 2008 Pontiac G8 GXP 6.2 LS3 holds an edge across most measurable criteria, offering more power, quicker acceleration, higher top speed. That said, the 1973 Pontiac Grand Am 455 V8 brings better value and remains a compelling choice for enthusiasts who value Pontiac heritage. The right pick depends on whether you prioritize specifications or the intangible qualities that make a car truly special.
The 2008 Pontiac G8 GXP 6.2 LS3 and 1973 Pontiac Grand Am 455 V8 share a manufacturer in Pontiac, but that's where the similarities get interesting. These two models reveal the versatility and ambition of the Pontiac brand. The 2008 Pontiac G8 GXP 6.2 LS3 holds a clear advantage in raw power with 415 hp compared to 250 hp, a 165-horsepower difference that shapes the driving experience. Under the hood, the contrast is notable: the Pontiac G8 GXP uses a V8 OHV displacing 6,162 cc, while the Pontiac Grand Am relies on a V8 OHV (Pontiac 455) with 7,456 cc. In the sprint to 60 mph, the 2008 Pontiac G8 GXP 6.2 LS3 edges ahead at 4.7 seconds versus 8.0 seconds. Rarity plays a significant role here — with only 1,829 units built, the 2008 Pontiac G8 GXP 6.2 LS3 is considerably scarcer than the Pontiac Grand Am's 56,063 examples. On the collector market, the 2008 Pontiac G8 GXP 6.2 LS3 commands a significant premium over the 1973 Pontiac Grand Am 455 V8, reflecting differences in prestige and rarity.