Market Analysis — AmeriCar Files Investment Index™
Market Analysis
Index Grade
Composite Score: 90.5
AmeriCar Files Investment Index™
Outstanding
Investment Asset
PILLAR I
Rarity & Production Integrity
PILLAR II
Auction Liquidity & Consistency
PILLAR III
Cultural Longevity
PILLAR IV
Macro Resilience
Average verified transaction price, 1980–2024 (USD)
Four-pillar index scores (0–100)
Public hammer prices from Barrett-Jackson and Bring a Trailer. Buyer's premium excluded.
Jun 2024
Bring a Trailer
426 Hemi
Numbers-matching, documented
$512,000
Jan 2024
Barrett-Jackson Scottsdale
440 Six Pack
Numbers-matching, restored
$462,000
Oct 2023
Bring a Trailer
440-4bbl
Documented, driver quality
$385,000
May 2023
Bring a Trailer
440-4bbl
High mileage, unrestored
$295,000
Mar 2023
Mecum Kissimmee
440 Six Pack
Partial restoration
$335,000
The 1970 Plymouth Superbird is one of the most recognisable and consistently appreciating assets in the American collector car market. Its sub-2,000 production run, documented NASCAR homologation history, and identifiable silhouette place it in a category of vehicles whose cultural profile materially exceeds its peer group.
Auction data across a 40-year window confirms sustained appreciation with a single documented drawdown during 2009–2011, from which the market recovered fully by 2013. The vehicle's macro resilience score of 86 reflects this recovery, penalised only by the duration of that trough relative to comparably priced alternatives.
Engine configuration is the primary value variable. Hemi-equipped examples command a premium of 30–50% above equivalent 440 Six Pack cars at equivalent condition. Buyers prioritising investment return should prioritise documented drivetrain provenance above cosmetic presentation grade.
Est. Annual Return
+11.2%
Compound avg., 1984–2024
CPI Outperformance
+8.4pp
Annualised vs. U.S. CPI
Market Tier
Elite
Top 2% of American muscle by value
The complete breakdown: every pillar scored, every data point examined.