GM 1585438 Speedometer

( Brand: Gm ), ( Manufacturer Part Number: 1585438 ), ( Material: Chrome ), ( Vintage Part: Yes ), ( Unit Of Measure: Mph ), ( Type: Speedometer ), ( Display Type: Analog ), ( Style: Vintage ), ( Universal Fitment: No ), ( Country Of Origin: United States )

Review GM Oem Speedometer Gm# Rare one Year Only fits CORVETTE 1958

The **GM 1585438 Speedometer for 1958 Corvette (Rare-One)** is a meticulously crafted, high-performance instrument designed exclusively for the iconic first-generation Corvette, specifically the 1958 model year. This speedometer is not merely a functional component but a piece of automotive heritage, meticulously engineered to deliver unparalleled precision and reliability while paying homage to the engineering brilliance of Chevrolet s early days. The unit features a robust, chrome-plated bezel with a bold, white dial face that stands out against the classic black background, ensuring optimal readability even under low-light conditions. The needle, finely balanced and weighted, glides smoothly across the graduated scale, marked in both miles per hour and kilometers per hour, catering to both domestic and international enthusiasts. What sets this speedometer apart is its **Rare-One** designation, indicating that it has been sourced from an original or high-quality reproduction part, often sourced from a limited batch of authentic components or meticulously restored examples. The internal mechanism is built to withstand the rigors of high-performance driving, with a durable spring system and a sealed bearing that minimizes friction and ensures longevity. Whether installed in a fully restored 1958 Corvette or a meticulously maintained classic, this speedometer not only enhances the vehicle s authenticity but also serves as a testament to the timeless design philosophy of General Motors. For collectors, restorers, and enthusiasts seeking the perfect blend of functionality and authenticity, the GM 1585438 Speedometer is an indispensable addition to any 1958 Corvette, embodying both performance and prestige.

### Pros and Cons of buying a 1958 Chevrolet Corvette (VIN 1585438) with the "Speedometer Rare-One" Modification

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#### **Pros**

1. **Extremely Rare and Unique Modification**

The "Rare-One" speedometer is a highly sought-after aftermarket modification from the 1950s and 1960s, originally produced by a small company called Rare-One Instruments. These speedometers were designed for high-performance vehicles and feature a distinctive, aggressive dial with a red-and-white color scheme, a tachometer, and a fuel gauge. The combination of this modification with a 1958 Corvette one of the most iconic early models makes this car a standout piece. Such modifications are now extremely valuable to collectors, especially in well-preserved examples.

2. **Historical and Collectible Value**

The 1958 Corvette is already a highly desirable classic car, particularly in original or near-original condition. This model year marks the transition from the body-on-frame design to the unitary body structure, and it introduced the iconic "split-window" coupe. A car like this with a rare modification like the Rare-One speedometer is likely to appreciate significantly over time, especially if it remains in excellent condition. Collectors and enthusiasts often pay premium prices for cars with unique or historically significant modifications.

3. **Performance and Authenticity**

The 1958 Corvette came with a 283 cubic inch inline-six engine (in the base model) or a 283 cubic inch V8 (in the V8 models), which were powerful for their time. If this car is a V8 model (which is more likely given the rarity of the Rare-One speedometer), it would have had a top speed of around 115-120 mph and could accelerate from 0-60 mph in approximately 8-9 seconds. The Rare-One speedometer, while primarily a cosmetic upgrade, adds to the car s authenticity as a high-performance machine from the era. If the car has been well-maintained or restored with period-correct parts, it would likely perform exceptionally well for its class.

4. **Show Car Potential**

The combination of a pristine 1958 Corvette and a Rare-One speedometer would make for an eye-catching display piece. This car would stand out at classic car shows, auctions, and gatherings, potentially attracting attention from other collectors and enthusiasts. The Rare-One speedometer, in particular, would be a conversation starter and a key selling point for anyone interested in the car s history and uniqueness.

5. **Potential for Investment Growth**

Classic cars, especially those with rare modifications, can be excellent long-term investments. The 1958 Corvette is already a strong investment, but the Rare-One speedometer adds another layer of exclusivity. If the car is documented with its history (e.g., original paperwork, restoration records, or provenance), its value could continue to rise as demand for early Corvettes and unique modifications grows. Auction sales of similar cars (e.g., 1958 Corvettes with rare modifications) have seen significant increases in value over the past decade.

6. **Cultural and Nostalgic Appeal**

The 1950s was a golden age for American automotive design, and the Corvette was one of the most ambitious projects of the era. Owning a car from this time period, especially with a modification like the Rare-One speedometer, connects the owner to a bygone era of innovation and craftsmanship. The car embodies the spirit of post-war optimism, the rise of the American muscle car, and the early days of Corvette racing. This cultural and nostalgic appeal can be incredibly rewarding for enthusiasts.

7. **Potential for Customization and Preservation**

If you are interested in classic cars but also enjoy working on projects, this car could offer a blend of preservation and customization. While the Rare-One speedometer is a unique modification, there may be other areas where you could restore or enhance the car (e.g., original upholstery, period-correct paint, or mechanical upgrades that stay true to the era). Alternatively, if you prefer to keep the car as close to original as possible, the Rare-One speedometer would be a key part of its character.

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#### **Cons**

1. **High Purchase Price**

The combination of a well-preserved 1958 Corvette and a Rare-One speedometer would likely command a very high price. Early Corvettes are already expensive, and the Rare-One modification would add significant value. Depending on the car s condition, provenance, and documentation, the purchase price could easily exceed $200,000, with some examples selling for much more at auction. This is a substantial financial commitment, and the car may not be practical for daily use due to its age and potential maintenance needs.

2. **Maintenance and Operational Costs**

While the 1958 Corvette is a relatively simple car compared to modern vehicles, it is not a "drive-anywhere" machine. The engine, transmission, suspension, and electrical systems are all from the 1950s and will require regular maintenance, including:

- **Engine and drivetrain**: The 283 V8 (if present) is robust but will need oil changes, valve adjustments, and potential rebuilds over time. The original transmission (likely a 2-speed Powerglide automatic or a 3-speed manual) may also require attention.

- **Suspension and steering**: The suspension components (shocks, springs, bushings) will wear out over time and may need replacement. The steering can be stiff and less precise than modern systems.

- **Electrical system**: The wiring, alternator, and starter may need updates or replacements, especially if the car has been stored for long periods.

- **Fuel system**: Carburetors (if present) will require tuning and cleaning, and fuel lines may need replacement.

- **Brakes**: Drum brakes are less effective than modern disc brakes, and brake linings will wear out quickly.

- **Exhaust and emissions**: Modern emissions regulations may require modifications to the exhaust system if the car is driven on public roads.

- **Tires and wheels**: Original wheels may be rusted or damaged, and modern tires will need to be carefully selected to match the era (e.g., bias-ply or early radials).

- **Interior**: The original upholstery (vinyl or leather) may crack or wear out, and modern safety features (e.g., seat belts, airbags) are not present.

These costs can add up quickly, especially if the car is not driven regularly. Even if the car is in excellent condition, unexpected repairs (e.g., a blown head gasket, transmission failure, or electrical issues) could be costly.

3. **Insurance Costs**

Classic cars are often insured separately from personal vehicles, and premiums can be high, especially for a rare and valuable car like this. Insurance companies may require the car to be stored in a secure location (e.g., a garage) and may have restrictions on how the car is driven. The cost of insuring a 1958 Corvette with a Rare-One speedometer could easily exceed $2,000 $5,000 per year, depending on the insurer and coverage level.

4. **Storage and Security**

A car of this value and rarity requires secure storage to protect it from theft, vandalism, or environmental damage (e.g., humidity, temperature fluctuations). Storing the car in a climate-controlled garage or a specialized classic car facility will add to the ongoing costs. If the car is not stored properly, it could suffer from rust, electrical issues, or other damage over time.

5. **Limited Practicality for Daily Use**

While the 1958 Corvette is a beautiful and historic car, it is not practical for daily driving. The ride can be uncomfortable due to the stiff suspension and lack of modern amenities (e.g., power steering, power brakes, air conditioning, cruise control). The fuel economy will be poor (around 10-15 MPG), and the car may not handle well in heavy traffic or adverse weather conditions. If you rely on your car for commuting or errands, this purchase would not be suitable.

6. **Potential for Devaluation or Market Fluctuations**

While classic cars generally appreciate in value, there is no guarantee. Market trends, economic conditions, and changes in collector preferences can all impact the car s value. For example, if there is an oversupply of 1958 Corvettes in the future or if the Rare-One speedometer becomes less desirable, the car s value could stagnate or even decline. Additionally, if the car is not well-documented or lacks provenance, its value may be harder to justify compared to cars with a clear history.

7. **Ethical and Historical Considerations**

The Rare-One speedometer is a highly sought-after modification, and there is a risk that some aftermarket parts may be reproductions or poorly made. If the speedometer is not authentic or if the car has been heavily modified with non-period-correct parts, its value and historical integrity could be compromised. It is important to verify the authenticity of the Rare-One speedometer and ensure that the car s modifications are documented and consistent with the era.

8. **Time and Commitment Required**

Owning a classic car like this requires a significant time commitment.

Details:

The needle is pretty straight and appears undamaged. The speedometer housing is in good condition, but would benefit from a repaint. Parts featured in this assembly include the speedometer housing, odometer, backing plate, lens, and bezel. It is dirty, but I don't notice any scratches or cracks.

It is, however, pitted pretty significantly. Original 1958 Corvette speedometer assembly. The backing plate is straight and true with good paint. The speedometer, itself, features the dot-style graphics with one year only design.

It needs nothing. The housing, speedo/odometer, backing plate, and bezel are all straight true with no broken or bent pieces. It will need to be reconditioned. The GM part number for the bezel is #1585515.

The GM part number is #1585438. The bezel is a straight part with no cracks or broken pieces. It features the 160 MPH design. It has a large crack in it and there are couple of pieces broken off.

The lens is in rough shape and probably needs to be replaced.

part #: 1585438 prices

• $275.00-$829.99

specifications boosttempgauges:

• for models: Corvette
• for years: 1958
• brand: Gm
• mpn: 1585438
• material: Chrome
• vintage part: Yes
• unit of measure: Mph
• type: Speedometer
• display type: Analog
• style: Vintage
• universal fitment: No
• country of origin: United States

shipping boosttempgauges:

• service: USPS Priority Mail
• type: Fixed
• cost: $25.00
• transit: 4-10 Days
• class: Expedited
• carrier: USPS

general boosttempgauges:

• condition: Used
• Interior Parts Accessories > Gauges > Individual Gauges

returns boosttempgauges:

• policy: Returns Accepted
• paid by: Seller
• time: 30 Days

offer boosttempgauges:

• sold: 0
• availability: In Stock
• quantity: 1
• options: Ship-to-home
• best offers: True
• started: February 16, 2026

seller boosttempgauges:

• city: West Des Moines, Iowa
• # reviews: 3420
• rating: 100.0%

payments boosttempgauges:

• credit card: Visa
• other
• wallet: Apple-pay

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