Ignition Contact Set Guide for the 1947 GMC EC283
Keep your classic GMC's engine running smoothly by understanding, diagnosing, and replacing your ignition points.
- The ignition contact set (points) is a normal wear-and-tear part on a 1947 GMC EC283 that requires periodic replacement.
- Symptoms of failure include a no-start condition, rough running, stalling, and misfiring.
- Standard Ignition is a reliable aftermarket brand for this component.
- Always replace the condenser with the points and ensure the point gap is set correctly during installation.
Understanding the Ignition System in Your Classic Truck
For owners of a vintage 1947 GMC EC283, the ignition contact set is a basic but essential part of the ignition system. Unlike modern vehicles with electronic ignition, these classic trucks rely on this mechanical switch to create the spark that ignites the fuel. Over time, the constant opening and closing, along with the small electrical arc, causes the points to wear down. Regular inspection and replacement are key parts of a standard tune-up for these vehicles.
Choosing the Right Aftermarket Ignition Contact Set
Original equipment (OEM) ignition points for a 1947 truck are no longer manufactured. This means you will be purchasing an aftermarket part. For a component this critical, it's important to choose a brand with a long history of quality.
Standard Ignition is a well-known and trusted brand in the aftermarket, offering parts for vehicles of this vintage. They are known for producing reliable components that meet or exceed the original specifications. For a classic truck like the EC283, a quality set of points from Standard Ignition is a dependable choice to ensure proper engine performance.
Pro Tip: Always replace the condenser when you replace the ignition contact set. The condenser absorbs excess electricity to prevent the points from burning out too quickly. Most ignition contact sets are sold as a kit that includes a new condenser.
Estimated Replacement Costs
The cost to replace the ignition contact set is very reasonable. The part itself is inexpensive, and a mechanic familiar with vintage vehicles can perform the job quickly.
| Part Type | Estimated Cost |
|---|---|
| New Aftermarket (Standard Ignition) | $21.44 |
| Shop Labor | $100 - $200 |
| Total Estimated Cost | $121.44 - $221.44 |
Known Issues, Recalls, or TSBs
There are no active recalls or Technical Service Bulletins (TSBs) from the National Highway Traffic Safety Administration (NHTSA) for the ignition system on a 1947 GMC EC283. Any issues you encounter will almost certainly be due to the age and normal wear of the components. The primary "issue" is that ignition points are a maintenance item that must be periodically adjusted and replaced, which is normal for vehicles from this era.
Frequently Asked Questions (FAQ)
How often should I replace the ignition points?
As a general rule, ignition points should be inspected at every tune-up and replaced every 10,000 to 12,000 miles. Since these trucks are often not driven daily, it's good practice to check them annually. The condenser should be replaced at the same time.
What does "setting the gap" mean?
Setting the gap refers to adjusting the small space between the two contact points when they are fully open. This is done using a feeler gauge. An incorrect gap will alter the ignition timing and cause poor engine performance. For a more precise adjustment, a dwell meter can be used.
Can I just clean my old points?
If the points are only slightly dirty, you can sometimes clean them with a special points file or a piece of fine-grit sandpaper to restore contact. However, given the low cost of a new set, replacement is always the better and more reliable option.
Can I upgrade my EC283 to electronic ignition?
Yes, electronic ignition conversion kits are a popular upgrade for classic vehicles. These kits replace the points and condenser with a solid-state module that fits inside the distributor. This eliminates the need for regular adjustment and can provide a more consistent spark, improving reliability and performance.
Technical Specifications
OEM Part Numbers: 1855720 1944375
Mechanical ignition contact point set for 6-cylinder engines. Includes points and condenser.
We Have This Part in Stock
The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.