Spark Plug Wire Set Guide for the 1955-1956 Chrysler Nassau
Get your classic V8 running smoothly with the right set of spark plug wires.
- Failing wires cause noticeable issues like rough idle, misfires, and hard starting; your car will not have a Check Engine light to warn you.
- Modern aftermarket wires from brands like Standard, ACDelco, and Taylor are the correct choice, as new OEM parts are unavailable.
- Upgrading to 8mm silicone wires from a brand like Taylor Cable can provide better heat resistance and durability for your V8 engine.
- Replacing spark plug wires is a simple, inexpensive DIY job that can be done in under an hour.
Signs of Failing Spark Plug Wires
Original-style spark plug wires from the 1950s were made with materials that break down over time due to engine heat, oil, and age. When your Nassau's wires start to fail, the symptoms are usually easy to notice. Besides visible damage like cracks, burns, or melted spots on the wires, the way the car drives is the biggest clue.
- Rough Idle: The engine may shake or sputter when you're stopped.
- Engine Misfire: You might feel a stumble or jerk from the engine, especially under acceleration. This happens when a cylinder fails to fire correctly.
- Hesitation or Sluggishness: The car may feel weak or unresponsive when you press the gas pedal.
- Hard Starting: A weak spark from bad wires can make the engine difficult to start, especially when cold.
- Radio Noise: Old, unshielded wires can sometimes create a static or buzzing sound on your AM radio that changes with engine speed.
No Check Engine Light
Your 1955-1956 Chrysler Nassau was built long before modern computer systems. It does not have a "Check Engine" light or the ability to store diagnostic trouble codes for issues like an engine misfire. You must rely on observing how the car runs and inspecting parts to diagnose problems.
Choosing the Right Aftermarket Wires
Finding new original Mopar parts for a car of this age is nearly impossible. Aftermarket parts are the standard for keeping these classics on the road. Modern aftermarket wires often use materials superior to what was available in the 1950s, offering better heat resistance and durability.
When choosing a set, you'll see different brands and types. Here’s a breakdown of what to consider:
Brand Tiers
- Good (OEM Style): Brands like Standard Motor Products and ACDelco's Professional line offer reliable, 7mm wires that are similar to the original design. They provide good performance for a stock engine and are a cost-effective choice for a daily driver or cruiser. Standard is a long-respected aftermarket brand, and ACDelco is a trusted name, though their "Professional" line is generally their value-oriented option.
- Better (Performance): Taylor Cable is a brand well-known in the hot rod and classic car community. They often produce 8mm wires with silicone jackets, which offer superior heat and voltage insulation. This is a great upgrade for durability, especially in the hot engine bay of a V8, and can help ensure a strong, consistent spark.
Pro Tip: Upgrade to Silicone
Modern silicone spark plug wires are a worthwhile upgrade over the original rubber and lacquer-coated style. Silicone provides much better heat resistance, which is a major cause of wire failure in older engine bays. Brands like Taylor specialize in these, but you can also find silicone options from Standard and ACDelco.
Cost of a New Spark Plug Wire Set (1955-1956 Chrysler Nassau)
| Part Type | Estimated Cost |
|---|---|
| New Aftermarket Spark Plug Wire Set | $33.50 - $66.54 |
Note: Prices are estimates and can vary based on brand, material, and retailer.
Frequently Asked Questions (FAQ)
What's the difference between 7mm and 8mm wires?
The measurement refers to the diameter of the wire. Original wires were typically 7mm. Modern performance wires are often 8mm or larger, with a thicker jacket for better insulation against heat and high voltage. For a stock ignition system, 7mm is fine, but 8mm wires can offer extra durability.
Do I need special tools to replace my spark plug wires?
No special tools are required. A set of spark plug wire pliers can make it easier to remove the boots without damaging them, but they can usually be pulled off by hand. The most important thing is to replace the wires one at a time to avoid mixing up the firing order.
Should I use dielectric grease?
Yes. Applying a small amount of dielectric grease to the inside of the spark plug boots is highly recommended. It helps seal out moisture and makes the wires much easier to remove in the future.
Are there any recalls for my Nassau's ignition system?
No. There are no active recalls or technical service bulletins (TSBs) from the NHTSA for the ignition system on a 1955-1956 Chrysler Nassau. Recalls from that era are long expired, and modern safety campaigns do not apply.
Technical Specifications
Engine: V8. Wire Diameter: 7mm (stock) or 8mm (performance). Jacket Material: EPDM Rubber or Silicone. Core: Carbon Suppression or Solid Core (for period-correct restorations). Number of Leads: 9 (8 for spark plugs, 1 for coil).
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.