Chevrolet Corvette C7 Grand Sport / Toyota GR Supra A90/A91

The Chevrolet Corvette C7 Grand Sport makes 466 horsepower and costs $67,000. The Toyota GR Supra A90/A91 makes 387 horsepower and costs $50,000—a $17,000 price gap (34% more expensive for the Corvette) for 79hp more power. Across 44 shared tracks with 392 unique comparison scenarios, the Corvette wins by just 0.63 seconds overall, and when you filter the comparison data on this page for matched modifications and matched tire treadwear, the Corvette wins 62.2% of battles with a 4.95-second average gap.

This is Chevrolet's track-focused Grand Sport versus Toyota's BMW-powered Supra (2020-2024). The Grand Sport weighs 3,464 lbs. The Supra weighs 3,351 lbs—113 pounds lighter. The Grand Sport has 79hp more power (466hp vs 387hp), yet wins only 62.2% of matched battles—the closest fight the Corvette faces in its comparison set. The Supra wins 37.8% of the time when everything is equal.

The 79-Horsepower Gap: Naturally Aspirated vs Turbocharged

The Grand Sport's LT1 6.2L V8 makes 466hp at 6,000 rpm and 630 lb-ft at 4,600 rpm naturally aspirated. Power-to-weight: 7.43 lbs/hp. The Supra's BMW B58 3.0L turbocharged inline-six makes 387hp at 5,800 rpm and 500 lb-ft at 1,600-4,500 rpm. Power-to-weight: 8.66 lbs/hp—a 14% disadvantage.

The B58's turbocharger advantage is low-end torque: 500 lb-ft from 1,600 rpm versus the LT1's 630 lb-ft at 4,600 rpm. The LT1 has more peak power and torque, but the B58's forced induction responds dramatically to tuning. The comparison data shows this pattern: when the Supra runs higher modification levels, the battle tightens or flips entirely.

What the Filtered Data Reveals

• Matched mod + matched tire (148 laps): C7 wins 62.2%, Supra wins 37.8%, 4.95s gap. This is the Corvette's smallest matched-condition win rate across all major comparisons. The Supra wins more than 1 in 3 battles when both run equal preparation—proof that the B58's turbo architecture keeps the fight competitive despite the 79hp deficit.
• Medium C7 vs heavy Supra, TW200/200 (18 laps): Supra wins 100% with 6.12s gap. When the Supra runs heavy modifications (Stage 2+ tune reaching 500-550hp), it defeats a medium-modified Corvette entirely. The B58's turbo ceiling transforms the battle.
• Medium C7 vs medium Supra, TW40/40 (27 laps): Supra wins 88.9% with 7.48s gap. On matched R-compounds, the Supra's lighter weight (113 pounds) and low-end turbo torque create an advantage over the Corvette. This scenario reversal shows how tire compound and modification level dramatically affect outcomes.

The $17,000 Price Gap and B58 Modification Potential

GR Supra A90/A91: $50,000 buys the BMW B58's 387hp, 3,351-pound curb weight, and one of the most modification-friendly turbo engines in production. The B58's ceiling is transformative: Stage 1 tune ($800) = 450hp, Stage 2 with downpipe ($2,500 total) = 500-550hp, upgraded turbo ($6,000-8,000) = 650-700hp. The comparison data proves this—heavily-modified Supras win 100% of battles against medium-modified Corvettes.

C7 Grand Sport: $67,000 buys the LT1's 466hp, widebody 335mm rear tires, Z06-derived aero, and Magnetic Ride Control. The LT1's naturally aspirated ceiling reaches 500-520hp with headers ($2,500), exhaust ($2,000), intake ($800), and tune ($1,000)—adding 40-60hp for $6,300. To reach 650hp requires supercharging ($8,000-12,000), matching the Supra's forced induction cost.

The $17,000 premium buys a car that wins 62% of matched battles and offers widebody stance the Supra can't match without extensive bodywork. But the Supra's $50,000 entry price leaves $17,000 for modifications that reach 550hp—transforming the 37.8% matched win rate into majority dominance.

The Verdict

Choose the Toyota GR Supra A90/A91 if you want turbocharged potential at $50,000, accept losing 62.2% of stock-vs-stock battles, and plan to tune the B58. A $2,500 Stage 2 tune reaches 500-550hp, transforming the fight entirely—the comparison data shows heavily-modified Supras win 100% against medium-modified Corvettes. The Supra is the choice for builders who value modification potential and 113 pounds less weight.

Choose the Chevrolet Corvette C7 Grand Sport if you want naturally aspirated V8 dominance at $67,000 and prioritize winning stock-vs-stock. You're paying $17,000 more (34% premium) for 79hp more power, 130 lb-ft more torque, widebody tires, and a 62.2% win rate when matched. The Grand Sport is the choice for drivers who want the car that wins 6 out of 10 battles out of the box.

LapMeta's 0.63-second overall gap and 4.95-second matched-condition gap show this is the Corvette's closest major battle. The Supra's 113-pound weight advantage and B58 turbo potential create a 37.8% matched win rate—far more competitive than any other Corvette comparison. For the driver who wants the best turbocharged sports car under $55,000 with 650hp potential, the Supra delivers. For the driver who wants the car that wins more often stock-vs-stock, the Grand Sport's $17,000 premium buys measurable—but not overwhelming—superiority.