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  3. CHEVROLET 3839947

CHEVROLET 3839947 Nos Up Tach Sun V-8 SST-90

fits make: Chevy, Gmc, Chevrolet. year: 1963–1966.

3839947 Chevrolet Nos Chevy V-8 Pick Up Truck Tach 1963 1964 1965 1966 Sun Sst-90 Gmc

( Brand: Chevrolet ), ( Manufacturer Part Number: 3839947 ), ( Type: Instrument Cluster ), ( Features: Illuminated )

Review CHEVROLET Nos Chevy V-8 Pick Up Truck Tach Sun Gmc fits 1963–1966

Introducing the Chevrolet 3839947 NOS (New Old Stock) V-8 Up Tach for select 1963, 1964, 1965, and 1966 Chevy and GMC vehicles. This is a genuine, original factory-engineered instrument, offering authenticity and reliability for your classic car restoration project or custom build.

The V-8 Up Tach, also known as Sun SST-90, is a single 6000 RPM speedometer designed to fit seamlessly into your vehicle's dashboard. The black-faced gauge features a clear, easy-to-read dial with white numerals and red pointers. The graduated white numbers around the dial's circumference make it simple to identify engine speeds at a glance.

This instrument cluster is manufactured to the highest standards, ensuring accurate and consistent readings. The dial face is protected by a scratch-resistant, high-impact acrylic lens, offering both style and durability. The gauge housing is constructed from die-cast aluminum, ensuring both strength and a classic appearance.

To install this tachometer, you will need a compatible wiring harness. The NOS tachometer does not come with a harness, but we recommend using a genuine factory harness for optimal performance and fitment.

By choosing the Chevrolet 3839947 NOS V-8 Up Tach, you'll not only be adding an essential performance measurement tool to your classic vehicle, but you'll also be enhancing its authenticity with an original factory instrument. This is an excellent investment for car enthusiasts who demand accuracy, reliability, and the unmistakable look and feel of original factory-engineered components.

Pros and Cons of Buying a Chevrolet 383 Stroker V-8 Up Tach for 1963-1966 Chevy and GMC Cars

Introduction:

The Chevrolet 383 Stroker V-8 Up Tach is an aftermarket performance upgrade for 1963-1966 Chevy and GMC cars. This upgrade involves installing a 383 cubic inch stroker V-8 engine and a tachometer (Up Tach) to improve engine performance and provide better driving experience. In this article, we will discuss the pros and cons of investing in this upgrade.

Pros:

1. Increased Power: The Chevrolet 383 Stroker V-8 engine delivers more power compared to the stock engine. This results in better acceleration, improved top speed, and overall better driving performance.

2. Enhanced Durability: The stroker engine is more robust and durable than the stock engine. This means fewer maintenance issues, longer engine life, and better reliability.

3. Customization: Installing a stroker engine and a tachometer is a great way to customize your classic Chevy or GMC car and make it stand out from the crowd.

4. Better Fuel Efficiency: Despite delivering more power, the stroker engine can offer better fuel efficiency due to its improved design and engineering.

5. Improved Drivability: The tachometer provides valuable feedback about engine RPM, helping drivers optimize engine performance and improve drivability.

Cons:

1. Cost: The cost of installing a Chevrolet 383 Stroker V-8 engine and a tachometer can be quite high. This includes the cost of the parts, labor, and any necessary modifications to the vehicle.

2. Complex Installation: Installing a stroker engine and a tachometer requires specialized skills and knowledge. It is recommended to work with experienced professionals to ensure a proper installation.

3. Weight: The stroker engine is heavier than the stock engine, which can impact vehicle handling and fuel efficiency.

4. Noise: The stroker engine can be louder than the stock engine, which may not be desirable for all drivers.

5. Compatibility: The stroker engine and tachometer may not be compatible with all 1963-1966 Chevy and GMC models, so it is essential to confirm compatibility before making a purchase.

Conclusion:

The Chevrolet 383 Stroker V-8 Up Tach is a significant investment for classic Chevy and GMC car owners looking for improved engine performance, better durability, and customization options. While it comes with some cons, such as cost, complexity, and weight, the pros generally outweigh the cons for those seeking a high-performance driving experience. Ultimately, the decision to invest in this upgrade depends on individual preferences, budget, and vehicle compatibility.

Recommendation:

If you are a classic car enthusiast with a 1963-1966 Chevy or GMC and are looking for a significant performance upgrade, the Chevrolet 383 Stroker V-8 Up Tach is an excellent option to consider. However, it is essential to carefully evaluate your budget, vehicle compatibility, and installation requirements before making a purchase. Working with experienced professionals and thoroughly researching the upgrade can help ensure a successful and rewarding experience.

Details:

The tach can be used on other applications. Used with EB or WPA transmitter. Chevrolet tachometer, part # 3839947. 1963-1966 Chevy V-8 pickup trucks.

Adjustable red line pointer. Sun model SST-90. Vintage NOS in the original box. Some light shelf ware scratches on the lens.

part #: 3839947 prices

  • $99.99-$225.00

specifications instrcluster:

  • for makes: Chevy, Gmc, Chevrolet
  • for years: 1963-1966
  • brand: Chevrolet
  • mpn: 3839947
  • type: Instrument Cluster
  • features: Illuminated

seller instrcluster:

  • rating: 100.0%
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  • # reviews: 2828

offer instrcluster:

  • quantity: 1
  • availability: In Stock
  • options: Ship-to-home
  • started: November 15, 2025
  • sold: 0

general instrcluster:

  • condition: New other see details
  • Interior Parts Accessories > Gauges > Instrument Clusters

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for makes: chevy, gmc, chevrolet, for years: 1963-1966, type: instrument cluster, features: illuminated,
category: auto parts > interior parts accessories > gauges > instrument clusters, sku: 12786538348902752,
Chevrolet 3839947 Is Similar To:
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5 offers $99.99–$225.00 USD
  • New other (see details). Offer #1 priced at $175.00 + $13.59 shipping estimate = $188.59* total. Made in the United States, this tachometer is a timeless piece for any car enthusiast's collection. The Vintage Sun 9,000 RPM Tachometer is a nostalgic and high-performance gauge for muscle cars and hot rods from the 1960s.+$13.59 shipping
  • Used. Offer #2 priced at $225.00 + $14.85 shipping estimate = $239.85* total. This tach has been tested and works smoothly throughout the RPM band with no sticking or hesitation. This tach is a real deal period correct unit for your early to mid 60's car or truck.+$14.85 shipping
  • Used. Offer #3 priced at $99.99 + $15.00 shipping estimate = $114.99* total. +$15.00 shipping
  • Used. Offer #4 priced at $89.99 + $20.00 shipping estimate = $109.99* total. +$20.00 shipping
  • New other (see details). Offer #5 priced at $865.00 + $14.85 shipping estimate = $879.85* total. This is the only Super Tach that has a redline printed on the dial instead of having an adjustable shift pointer. The model number is SST-9.+$14.85 shipping

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