The 1967 Chevy Impala SS 427: History, Prices, and Collector Value

A Brief History of the 1967 Impala SS 427

The 1967 Chevrolet Impala SS 427 sits at the crossroads of muscle‑car mythology and full‑size comfort. While the Impala nameplate was already a staple of American roads, Chevrolet’s Super Sport (SS) badge turned the sedan into a legitimate performance platform. The star of the show was the 427 cubic‑inch (7.0 L) L78 V8, officially rated at 425 horsepower, a powerplant that could launch the heavy four‑door into 0‑60 mph in just over six seconds—a startling feat for its size.

Only a handful of dealers offered the 427 as a factory option; most buyers received the more common 396 cid V8. Consequently, the 427‑powered SS models were produced in limited numbers, making them a rare sight even on the showroom floor. Today, that rarity fuels both fascination and price.

Original Pricing and Production Numbers

When Chevrolet introduced the 1967 model year, the base Impala listed for roughly $3,500. Adding the SS package—dual exhaust, distinctive grille, bucket seats, and the 427 engine—typically added $400 to $500 to the sticker price. In other words, buyers were paying a premium of about 12 % for the high‑performance treatment.

Exact production figures are a bit murky, but most historians agree that fewer than 2,000 Impala SS 427s left the factory. Some estimates place the number closer to 1,800, including a handful of dealer‑installed 427 conversions. The limited run, combined with the fact that many original owners later swapped engines, means that finding a car with a documented, original 427 is especially uncommon.

How Collector Values Have Evolved

During the 1990s, a well‑preserved Impala SS 427 could be purchased for under $15,000. As the classic‑car market matured, enthusiasts began to recognize the model’s unique blend of size, power, and rarity. By the early 2000s, auction results regularly hovered around $30,000 to $40,000.

In the past decade, values have accelerated further. A fully documented, original‑engine example in excellent condition now commands anywhere from $70,000 to $100,000, with pristine, low‑mileage cars occasionally surpassing that range. The price trajectory reflects broader trends: increasing interest in muscle cars, a tighter supply of well‑preserved examples, and the allure of owning a genuine 427 V8 in a full‑size sedan.

What Drives Today’s Market Price?

• Original Engine: Cars that retain the factory‑installed L78 427, or have verifiable documentation of an original swap, fetch a premium.
• Condition: Restoration quality matters. A “concours‑grade” finish can add $10,000 – $20,000 over a car in good, but not flawless, shape.
• Documentation: Original sales invoices, build sheets, or service records bolster confidence and price.
• Originality of Options: Factory‑installed SS features—such as the dual‑exhaust system, SS badging, and specific interior trim—are valued higher than later aftermarket additions.
• Provenance: A notable ownership history, especially if tied to racing or celebrity collectors, can further inflate the asking price.

Tips for Prospective Buyers

If you’re considering adding a 1967 Impala SS 427 to your collection, start by verifying the engine’s authenticity. Look for casting numbers on the block that match the 427 L78 specifications, and cross‑check them with factory records when possible.

Next, assess the vehicle’s structural integrity. Given the car’s age, rust—particularly in the floor pan and wheel arches—is a common concern. A thorough inspection by a specialist who knows classic Chevrolets can uncover hidden issues before they become costly repairs.

Finally, weigh the cost of restoration against market value. In some cases, a well‑executed restoration can increase the car’s worth by a substantial margin, but over‑restoring (for example, using non‑original parts) may not yield the same return.

FAQ

How many 1967 Impala SS 427s were built?

Exact numbers aren’t published, but experts estimate fewer than 2,000 were produced, with many sources citing around 1,800 units, including dealer‑installed conversions.

What should I look for to confirm an original 427 engine?

Check the engine block for casting numbers that correspond to the L78 427, review any available factory build sheets, and look for original 427‑specific components such as the high‑flow intake manifold and dual‑exhaust manifolds.

Does the car’s condition dramatically affect price?

Yes. A car in excellent, original condition can command up to 30 % more than a similar model with rust, worn interior, or non‑original parts.

Are there any known issues specific to the 1967 Impala SS 427?

Common concerns include rust in the rear subframe, aging rubber suspension bushings, and potential wear on the high‑performance engine if it hasn’t been regularly maintained.